NUMMI DIGITALI is a project aimed at enhancing the numismatic collection of the Regional Archaeological Museum “A. Salinas” in Palermo. To this end, a digital, open-access database has been created, aligned with the national cataloguing standards of the Central Institute for Cataloguing and Documentation (ICCD) of the Italian Ministry of Culture (MiC). The goal is to ensure data interoperability and shareability, according to the Linked Open Data (LOD) paradigm. The database is connected to the web through a front-end interface that provides public access and a real user interaction via Information and Communication Technologies (ICT). More recently, NUDItEu has extended the original project with the novel features presented in this paper, focusing on geospatial visualization, contextual analysis, archaeometric data, interdisciplinary study of coins and with preparatory work for aligning the cataloguing standards with the Numismatic Description Standard (NUDS) of nomisma.org. This alignment will allow the transfer of data for coins catalogued into major thematic databases in Europe and America.