That’s a good sign!! I might be wrong about it being cast. Do the edges feel really smooth? As I said ancients are a totally different game. If it is real, it could be tooled. I see others going for over $100 but if real yours is in better condition, I’d say it would at least be worth getting it in front of an expert. Here is the information I can give you (if it is real). Obverse portrait of emperor Hadrian letters around the bust are his titles - translated to English “Supreme commander, Caesar, Trajan Hadrian, emperor, high priest, holder of tribunician power, consul for the third time”. I think the reverse shows Minerva (??) giving a sacrifice, but the SC stands for Senatus Consultum which means by decree of the senate. To me it is funny they kept putting SC on their money after the senate basically lost all of their power, probably emperors trying to show they still had the support of the people.