Watch List notes:

Denarius circa 179-170, AR 3.56 g. Helmeted head of Roma r.; behind, X. Rev. The Dioscuri galloping r; below, helmet and ROMA in partial tablet. Sydenham 270. RBW 725. Crawford 168/2.
Very rare. Light iridescent tone, minor marks in field, otherwise good very fine

Privately purchased from Spink & Sons on the 3rd of October 1980.