Watch List notes:

Star no star (first) series Denarius circa 206-195, AR 20.50 mm., 4.17 g.
Helmeted head of Roma r.; behind, X. Rev. The Dioscuri galloping r.; in exergue, ROMA in linear frame. Sydenham -. RBW –, cf 723. Crawford -, cf 113/1.

Struck on a very broad flan and Good Extremely Fine

Apparently unique. Not in Crawford.