﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2025v4.1" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2026-06-22T08:43:51-07:00</ReturnTs>
    <TaxPeriodEndDt>2025-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>462979080</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>Allman &amp; Associates Inc</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>9600 Great Hills Trail Suite 150W</AddressLine1Txt>
        <CityNm>Austin</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>78759</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2025-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>362976411</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>INTERNATIONAL SOCIETY OF ANTIQUE SCALE COLLECTORS</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>INTE</BusinessNameControlTxt>
      <PhoneNum>5122501400</PhoneNum>
      <USAddress>
        <AddressLine1Txt>7301 FIREOAK DRIVE</AddressLine1Txt>
        <CityNm>AUSTIN</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>78759</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>JUDY SOSLAU</PersonNm>
      <PersonTitleTxt>TREASURER</PersonTitleTxt>
      <PhoneNum>5122501400</PhoneNum>
      <SignatureDt>2026-06-22</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <PreparerPersonGrp>
      <PreparerPersonNm>Peter L Allman CPA</PreparerPersonNm>
      <PTIN>P00648533</PTIN>
      <PhoneNum>5125023077</PhoneNum>
      <PreparationDt>2026-06-22</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2025</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="6">
    <IRS990 documentId="IRS990-01" referenceDocumentId="IRS990ScheduleO-01" softwareId="25022686">
      <PrincipalOfficerNm>ALLAN RODIN</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>620 BALLANTRAE DR UNIT A</AddressLine1Txt>
        <CityNm>NORTHBROOK</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60062</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>109910</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.ISASC.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1978</FormationYr>
      <LegalDomicileStateCd>IL</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO FOSTER RESEARCH, EDUCATION AND PRESERVATION OF SCALES, WEIGHTS AND MEASURES BOTH WITHIN AND OUTSIDE OF THE ORGANIZATION.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>8</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>8</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>44</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>36868</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>35530</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>30639</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>31724</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>3707</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>16918</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>965</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>72179</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>84172</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>151</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>62396</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>56412</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>62396</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>56412</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>9783</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>27760</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>1385087</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>1412847</TotalAssetsEOYAmt>
      <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>1385087</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>1412847</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>TO ENCOURAGE THE ACQUISITION, PRESERVATION, EXHIBITION, STUDY AND RESTORATION OF ANTIQUE SCALES, WEIGHTS AND MEASURES, INCLUDING THE PROMOTION OF EDUCATIONAL OPPORTUNITIES AND THE DISSEMINATION OF INFORMATION.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>53142</ExpenseAmt>
      <GrantAmt>0</GrantAmt>
      <RevenueAmt>31724</RevenueAmt>
      <Desc>PUBLISHED QUARTERLY JOURNAL &amp; NEWSLETTER; PROVIDED RESEARCH ASSISTANCE; MAINTAINED WEBSITE; PRESERVED ANTIQUE SCALES FOR THE MEMBERSHIP AND THE PUBLIC; ORGANIZED VIRTUAL MEETINGS VIA ZOOM; AND HELD ANNUAL IN-PERSON CONVENTION.</Desc>
      <TotalProgramServiceExpensesAmt>53142</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="IRS990ScheduleA-01" referenceDocumentName="IRS990ScheduleA">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="IRS990ScheduleB-01" referenceDocumentName="IRS990ScheduleB">true</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">true</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">true</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">true</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD-01" referenceDocumentName="IRS990ScheduleD">false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>false</FundraisingActivitiesInd>
      <GamingActivitiesInd>false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>false</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd referenceDocumentId="IRS990ScheduleM-01" referenceDocumentName="IRS990ScheduleM">false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd referenceDocumentId="IRS990ScheduleM-01" referenceDocumentName="IRS990ScheduleM">true</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>2</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>false</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>8</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>8</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>true</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>true</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>true</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>true</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>true</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>false</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>false</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>false</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <OwnWebsiteInd>X</OwnWebsiteInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>THE ORGANIZATION</PersonNm>
        <PhoneNum>5122501400</PhoneNum>
        <USAddress>
          <AddressLine1Txt>7301 FIREOAK DRIVE</AddressLine1Txt>
          <CityNm>AUSTIN</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>78759</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>ALLAN RODIN</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>15.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KURT BEYREIS</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>3.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CAROL HAYDEN</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARY ANNE MURPHY</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>4.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GREG MOSS</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JUDY SOSLAU</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>12.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ERNIE SEGUNDO</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANN BEYREIS</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <AllOtherContributionsAmt>35530</AllOtherContributionsAmt>
      <NoncashContributionsAmt>14805</NoncashContributionsAmt>
      <TotalContributionsAmt>35530</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>CONVENTION INCOME</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>20357</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>11337</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>RESEARCH FEES</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>30</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>31724</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>8701</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>8701</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>31449</SecuritiesAmt>
        <OtherAmt>2506</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>17135</SecuritiesAmt>
        <OtherAmt>8603</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>14314</SecuritiesAmt>
        <OtherAmt>-6097</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>8217</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>-6096</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>14313</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>84172</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>25628</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>23014</ExclusionAmt>
      </TotalRevenueGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>1650</TotalAmt>
        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1650</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </FeesForServicesAccountingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>1781</TotalAmt>
        <ProgramServicesAmt>1498</ProgramServicesAmt>
        <ManagementAndGeneralAmt>132</ManagementAndGeneralAmt>
        <FundraisingAmt>151</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>1049</TotalAmt>
        <ProgramServicesAmt>1049</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>17835</TotalAmt>
        <ProgramServicesAmt>17835</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OccupancyGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>21084</TotalAmt>
        <ProgramServicesAmt>20611</ProgramServicesAmt>
        <ManagementAndGeneralAmt>473</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>2448</TotalAmt>
        <ProgramServicesAmt>1584</ProgramServicesAmt>
        <ManagementAndGeneralAmt>864</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>EQM COSTS</Desc>
        <TotalAmt>10565</TotalAmt>
        <ProgramServicesAmt>10565</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>56412</TotalAmt>
        <ProgramServicesAmt>53142</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3119</ManagementAndGeneralAmt>
        <FundraisingAmt>151</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>17289</BOYAmt>
        <EOYAmt>14264</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>48496</BOYAmt>
        <EOYAmt>34756</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <LandBldgEquipCostOrOtherBssAmt>7900</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>7900</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>234753</BOYAmt>
        <EOYAmt>273076</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>1084549</BOYAmt>
        <EOYAmt>1090751</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>1385087</BOYAmt>
        <EOYAmt>1412847</EOYAmt>
      </TotalAssetsGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>1385087</BOYAmt>
        <EOYAmt>1412847</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>1385087</BOYAmt>
        <EOYAmt>1412847</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>1385087</BOYAmt>
        <EOYAmt>1412847</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>27760</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA-01" softwareId="25022686">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <OtherSupportSumAmt>0</OtherSupportSumAmt>
      <PublicSupportCY170Pct>0</PublicSupportCY170Pct>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>33560</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>28459</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>20487</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>36868</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>35530</CurrentTaxYearAmt>
        <TotalAmt>154904</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>13933</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>28625</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>29542</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>30639</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>31724</CurrentTaxYearAmt>
        <TotalAmt>134463</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <TotalAmt>0</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>47493</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>57084</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>50029</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>67507</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>67254</CurrentTaxYearAmt>
        <TotalAmt>289367</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <TotalAmt>0</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>289367</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>5001</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>6455</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>7168</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>7674</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8701</CurrentTaxYearAmt>
        <TotalAmt>34999</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>5001</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>6455</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>7168</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>7674</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>8701</CurrentTaxYearAmt>
        <TotalAmt>34999</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>52494</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>63539</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>57197</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>75181</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>75955</CurrentTaxYearAmt>
        <TotalAmt>324366</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.89210</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.91110</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.10790</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.08890</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB-01">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="IRS990ScheduleD-01" softwareId="25022686">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <SolicitedAssetsSaleInd>true</SolicitedAssetsSaleInd>
      <LandGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <BookValueAmt>0</BookValueAmt>
      </LandGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>7900</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>7900</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>ANTIQUE SCALE COLLECTION</Desc>
        <BookValueAmt>1090751</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>1090751</TotalBookValueOtherAssetsAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt III, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAINTAINS AN ANTIQUE SCALE COLLECTION WHICH FURTHERS THE ORGANIZATIONS EXEMPT PURPOSE BY SEEKING TO LINK THE HISTORICAL, SCIENTIFIC, AESTHETIC, AND FUNCTIONAL VALUE OF SCALES, WEIGHTS AND MEASURES TO OUR DAILY LIVES THROUGH EDUCATION, PRESERVATION AND RESEARCH.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleM documentId="IRS990ScheduleM-01">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>45</ContributionCnt>
        <NoncashContributionsRptF990Amt>14805</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>VALUE ASSIGNED BY MUSEUM</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>false</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>true</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt I Line 32b</FormAndLineReferenceDesc>
        <ExplanationTxt>WHEN NECESSARY, AUCTIONS ARE USED TO SELL DONATED SCALES WHICH ARE DUPLICATES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO-01" softwareId="25022686">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>KURT BEYREIS AND ANN BEYREIS HAVE A FAMILY RELATIONSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>MEMBERS CONSIST OF ANY INDIVIDUAL THAT REMITS A MEMBERSHIP APPLICATION AND APPROPRIATE DUES IF REQUIRED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBERS HAVE THE POWER TO ALTER, AMEND, OR REPEAL THE BYLAWS OR ADOPT NEW BYLAWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>COPIES OF THE FORM 990 ARE AVAILABLE TO THE GOVERNING BODY BEFORE FILING. THE TREASURER REVIEWS THE FORM 990 PRIOR TO SIGNING THE RETURN.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>EACH OFFICER (EVERY OFFICER IS A DIRECTOR) AND ANY COMMITTEE MEMBER AS DETERMINED BY THE BOD HAVE SIGNED A CONFLICT OF INTEREST DISCLOSURE STATEMENT AND WILL ACKNOWLEDGE THE REQUIREMENTS ANNUALLY BY SIGNING THE CONFLICT OF INTEREST DISCLOSURE STATEMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other</FormAndLineReferenceDesc>
        <ExplanationTxt>ADDITIONAL ACTIVITIES TO FACILITATE PUBLIC ACCESS AND EDUCATION INCLUDE PUBLIC ACCESS TO EARLIER ISSUES OF EQUILIBRIUM, THE ORGANIZATIONS QUARTERLY JOURNAL (IN COOPERATION WITH THE NEWMAN NUMISMATIC PORTAL AT WASHINGTON UNIVERSITY), TWICE-WEEKLY FACEBOOK AND INSTAGRAM POSTINGS WITH LINKS TO THE ORGANIZATIONS WEBSITE FOR FURTHER INFORMATION; AND - ON THE WEBSITE - A TUTORIAL ON THE EVOLUTION OF WEIGHING DEVICES, WEIGHING SYSTEMS, SCALE TYPES AND PURPOSES, AND EXPLANATION OF VARIOUS TYPES OF WEIGHTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>