During her master's degree in numismatics at the University of Vienna, Maya Lerner reclassified the coins of the Roman emperor Hadrian (117–138) from this only partially catalogued collection and entered them into the KENOM online database.

This means that they are now available to all numismatic researchers and enthusiasts worldwide. At the same time, the coins have been linked to the OCRE (Online Coins of the Roman Empire) online catalog, which documents which objects from the standard reference work on Roman numismatics – the series "The Roman Imperial Coinage" (RIC) – are available in Mainz.

The coins in the city archives provide a good insight into the extensive iconography that developed under Emperor Hadrian. The early coins show Hadrian's emulation of his predecessor, Emperor Trajan (98–117), in the obverse busts and inscriptions. Later coins clearly show Hadrian's emancipation from this model.

There are also a few representative examples of the so-called "travel souvenir coins," which feature an allegorical depiction of various Roman provinces on the reverse and were created at the end of Hadrian's reign.

Hadrian also had several reverse designs minted that were rarely issued during the Roman Empire compared to other types. These include the depiction of Hilaritas, the personification of cheerfulness, joy, and happiness.

After the coins of Hadrian's predecessors, Nerva and Trajan, held in the Coin Cabinet were catalogued and made available online by students at Johannes Gutenberg University in 2016, another important step has now been taken towards making the Coin Cabinet's ancient collections accessible online, thanks to the tremendous voluntary commitment of Ms. Lerner. This also makes the city archives an important place of learning for students of ancient history.