The aim of this paper is to summarize the results of the study of the numismatic evidence on the Roman colony of Dium from Augustus (27 BC - AD 14) to Hadrian (AD 117-138), conducted for the purposes of an MA thesis. The numismatic material concerns both the coinage produced by Dium and the coins of other issuing authorities that were discovered during the excavations at the administrative and commercial center of Dium, as well as at the sanctuaries extra muros. The presentation of the excavation coins attempts to offer an insight into the range of financial transactions and the parallel use of imperial and provincial coins within a Roman colony in the Greek East.