Watch List notes:

D. Silanus L.f. 91 BC. AR Denarius (18.5mm, 3.95 g, 7h). Rome mint. Helmeted head of Roma right; O to left / Victory driving galloping biga right; XXVII above. Crawford 337/3; Sydenham 646; Junia 15; Type as RBW 1233; CNR Junia 14/64 (this coin illustrated). EF, iridescent toning.

From the Andrew McCabe Collection. Ex Peus 294 (15 March 1978), lot 458.

This is the CNR (Banti) illustrated example of the O/XXVII control mark combination. [Andrew McCabe]