
1) Coin of ancient Rome 2) Silver coin
Found on
https://www.crosswordclues.com/clue/quadrigatus

The quadrigatus was a medium-sized silver coin produced by the Roman Republic during the 3rd century BC. The obverse featured a young janiform bust and the reverse featured Victory driving a quadriga (four-horse chariot), giving the coin its name, with the inscription `ROMA` below. The coin weighed about 6.8 grams (6 scruples), consistent with a.....
Found on
http://en.wikipedia.org/wiki/Quadrigatus

(from the article `coin`) ...to the Second Punic War, terminating in a new issue of silver coins of Roman style and types (marked ROMA), including Jupiter in a quadriga ...
Found on
http://www.britannica.com/eb/a-z/q/3

a silver coin of ancient Rome, bearing an image of Jupiter in a quadriga on the reverse.
Found on
https://www.infoplease.com/dictionary/quadrigatus
No exact match found.