Marcel Jungfleisch, a famous numismatist who lived in Cairo in the first half of the 20th century, made an impressive work of collecting data on coin collectors. His work, held by the Institut français d’archéologie orientale in Cairo, consists of 17,461 paper cards representing about 16,000 individuals with information (for part of them) such as their birth and death dates, place of residence, the type of coin collected, and a bibliography concerning their collections. These data have been digitized and are currently entered into a database that will be available online, offering a unique tool for our discipline. The database will be proposed as an open source data (following the path of the Fontes Inediti Numismaticae Antiquae (FINA) project) according to the rules of the Linked Open Data, and providing useful links to other online resources (Wiki, ISNI, Ark, VIAF, Geonames, etc.) as well as hosting archives of individuals.