Nomisma Banner is an international, collaborative project to provide stable digital representations of numismatic concepts according to the principles of Linked Open Data (LOD). These take the form of HTTP URIs that also provide access to reusable information about those concepts, along with links to other resources. The community maintains a formalized RDF Ontology and a data model for encoding concepts, coins, typologies, hoards, and other types of numismatic objects as LOD.

Since 2010, the project has been hosted and financially supported by the American Numismatic Society in New York. It was founded by Andrew Meadows, then deputy director of the Society, and Sebastian Heath, its data scientist. The current Principal Developer of the Nomisma project is Ethan Gruber, Director of Data Science at the ANS.

The information made available by has been provided by a wide community of scholars and institutions. All concepts published by domain are openly accessible with a CC-BY license. See the Datasets page for further license statements for partner contributions to the LOD ecosystem.

If you would like to support the work of the ANS and the wider numismatic community in maintaining this resource for future generations, please consider making a donation to the ANS by visiting

Get Involved

We are interested in contributions of open numismatic data. If you are a scholar willing to contribute expertise to expand the scope of Nomisma's coverage of concepts, please contact a relevant Working Group or the Scientific Committee to establish a new one.

Get Data concept and contributing partner Linked Open Data are available as bulk downloads. A SPARQL endpoint integrates these data and enables querying to answer complex research questions.

Conduct Research has built-in typological distribution and metrical analysis features, but most resesearch tools available in thematic projects listed in the About page. We plan to expand these graphical tools in Nomisma eventually, but the SPARQL examples provide a tutorial for asking complex research questions.

The following institutions have contributed data, specialist advice and/or financial support to the Nomisma project: NEH Logo

Nomisma Linked Data

Linked Data: JSON-LD, TTL, RDF/XML

Pelagios Commons

Linked Places: GeoJSON-LD

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