Hi can anyone tell me if this is a bronze Nummus or a silver Denarius please? It looks bronze but I've seen silver this colour. Either way an ID on the portrait would be helpful too. Diameter is 21mm. Thanks.
It's a bronze follis, the emperor is easy to find, just copy the legend (IMP CONSTANTINVS PF AVG) into the search engine on wildwinds and then match the reverse to examples there: https://www.wildwinds.com/
I collect and deal in ancient Roman coin. In case you're looking for affordable ancient coins or need any help with the coins you already have send me a message.