Roman Ancient Coin Identification

Well, it says Hadrianus on the obverse (suspiciously clearly given the condition!) and it looks like Dacia on the reverse. It has traces of S C in the reverse field. So that would make it:

Hadrian RIC II, Part 3 (second edition) 1648-1654 (Sestertius, made of Orichalcum) http://numismatics.org/ocre/id/ric....dn.1648-1654

or

Hadrian RIC II, Part 3 (second edition) Hadrian 1655-1662 (Dupondius or As, made of Bronze) http://numismatics.org/ocre/id/ric....dn.1655-1662

There are a lot of varieties based on what Hadrian is wearing and what angle he is viewed from. He looks laureate and draped like Hadrian 1650 (would weigh 20g+) http://numismatics.org/ocre/id/ric.2_3(2).hdn.1650 and Hadrian 1658 (would weigh 10-15g) http://numismatics.org/ocre/id/ric.2_3(2).hdn.1658, but it's hard to tell.

It's surely not worth much at all in that condition.

With that bubbly appearance, my assumption would be that it's a cast counterfeit.