{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.coin","code":"thing-q41207","url":"https://ver.cy/models/thing/q41207/","name":"coin","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A small, flat, usually round piece of metal issued by a government or authority as money, with a face value, design and inscriptions; also produced as commemorative and bullion pieces and collected in numismatics.","purpose":"Let an agent handle coins by issuer, denomination, series, metal, legal tender status, authenticity and collecting, without investment advice.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Issued by an authority","Face value","Minted metal","Collectible"],"structure":{"bundles":[{"id":"identity","name":"Identity","description":"Which coin.","layers":[{"id":"issuer","name":"Issuer","description":"Country and year.","findings":[{"id":"issuer-finding","name":"Issuer","description":"Issuer and year.","questions":[{"text":"Which issuer, denomination and year is it?","kind":"provenance"},{"text":"What is its catalogue number?","kind":"provenance"}]}]},{"id":"status","name":"Status","description":"Legal tender.","findings":[{"id":"status-finding","name":"Status","description":"Legal tender status.","questions":[{"text":"Is it still legal tender?","kind":"provenance"},{"text":"Can withdrawn coins be exchanged?","kind":"provenance"}]}]}]},{"id":"authenticity","name":"Authenticity","description":"Genuine or not.","layers":[{"id":"checks","name":"Checks","description":"Weight and details.","findings":[{"id":"checks-finding","name":"Checks","description":"Authenticity checks.","questions":[{"text":"Do weight, diameter and details match official specifications?","kind":"measurement"},{"text":"Should an expert or grading service check it?","kind":"action"}]}]},{"id":"report","name":"Report","description":"Counterfeits.","findings":[{"id":"report-finding","name":"Report","description":"Suspected counterfeits.","questions":[{"text":"What should someone do with a suspected counterfeit coin?","kind":"action"},{"text":"Which authority should be told?","kind":"provenance"}]}]}]},{"id":"collecting","name":"Collecting","description":"Numismatics.","layers":[{"id":"value","name":"Value","description":"Catalogues.","findings":[{"id":"value-finding","name":"Value","description":"Catalogue value.","questions":[{"text":"What is its catalogue value in this grade?","kind":"measurement"},{"text":"Is the user asking for investment advice?","kind":"boundary"}]}]},{"id":"care","name":"Care","description":"Handling.","findings":[{"id":"care-finding","name":"Care","description":"Coin care.","questions":[{"text":"How should coins be handled and stored?","kind":"action"},{"text":"Why should they not be cleaned?","kind":"boundary"}]}]}]},{"id":"heritage","name":"Heritage","description":"Ancient coins.","layers":[{"id":"finds","name":"Finds","description":"Reporting.","findings":[{"id":"finds-finding","name":"Finds","description":"Coin finds.","questions":[{"text":"Must a found hoard or ancient coin be reported here?","kind":"provenance"},{"text":"To which authority?","kind":"provenance"}]}]},{"id":"trade","name":"Trade","description":"Provenance.","findings":[{"id":"trade-finding","name":"Trade","description":"Trade provenance.","questions":[{"text":"Does this ancient coin have documented legal provenance?","kind":"boundary"},{"text":"Which export rules apply?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify coins and report their issuer, date and face value from catalogues.","Count, sort and check coins for an operator that authorized it."],"mustNot":["Make, sell or pass counterfeit coins.","Deface or melt legal tender where the law forbids it.","Help trade ancient coins taken from archaeological sites illegally.","Give personal investment advice on bullion or collectible coins."],"requiresHuman":["Valuing a collection for sale, insurance or inheritance."]},"ethics":{"considerations":["Counterfeits undermine trust in money and cheat the people who receive them.","Looting for coins destroys archaeological heritage."],"affectedParties":["Holders of the coins","Collectors","Heritage and source communities"]},"owners":{"steward":"The holder owns each coin; the issuing authority and mint answer for the currency.","roles":[],"masterSystems":[]},"relations":[{"target":"Q116035976","type":"parent","note":"registry parent class"},{"target":"Q2342494","type":"parent","note":"registry parent class"},{"target":"Q693464","type":"parent","note":"registry parent class"},{"target":"Q860861","type":"parent","note":"registry parent class"},{"target":"cash and collectable","type":"related","note":"category"},{"target":"mint and central bank","type":"related","note":"issuer"},{"target":"numismatics","type":"related","note":"field"},{"target":"banknote","type":"related","note":"other cash"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.coin","Wikidata: Q41207 (https://www.wikidata.org/wiki/Q41207)","KM number: Krause catalogue coin types"]},"properties":{"applicability":"required","items":["Diameter:  millimetres - Measure across a circular coin with calipers, or record maximum width for a noncircular coin.","Thickness:  millimetres - Measure with a micrometer or calipers and specify whether the measurement includes the raised rim.","Mass:  grams - Measure with a calibrated balance and compare against the specification for the denomination and issue.","Elemental mass fraction:  percent by mass - Determine composition through validated material analysis while accounting for plating or multiple metal components."]},"recognition":{"applicability":"required","items":["Denomination, year and mint mark","Obverse and reverse designs","Tokens and medals are not currency","Metal discs with portraits, emblems, inscriptions and edges that may be milled or lettered."]},"capabilities":{"applicability":"required","items":["identify coins by issuer and year","check legal tender status","detect likely counterfeits","value coins using catalogues"]},"hazards":{"applicability":"required","items":["Counterfeit coins","Illegally excavated ancient coins","Agents giving investment advice"]},"interfaces":{"applicability":"required","items":["Coinage and legal tender laws","Counterfeiting laws","Export rules for antiquities"]},"context":{"applicability":"required","items":["Cash payment, store of value and collecting.","circulating coins","commemorative coins","bullion coins","historical and ancient coins","error coins"]}},"sources":[{"title":"Wikidata item Q41207: coin","url":"https://www.wikidata.org/wiki/Q41207","note":"identity and sense of the item"},{"title":"Wikipedia: Coin","url":"https://en.wikipedia.org/wiki/Coin","note":"general description of the item"}],"openQuestions":["Should coin series be separate entries?","How should catalogue numbers be linked?","How should ancient coins be handled legally?"],"resources":{"spec":"/models/things/publications/thing-q41207/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q41207/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T10:43:20Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:30+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}