Watch List notes:

T. Quinctius Flamininus . AR Denarius, 126 BC. Helmeted head of Roma right; below chin, X; behind flamen's cap. / The Dioscuri galloping right; below horses, Macedonian shield between T-Q; in exergue, ROMA. Cr. 267/1; B. 2. AR. 389.00 g. 17.00 mm. Brilliant and lightly toned. Good VF.

The flamen's cap is clearly an allusion of the moneyer's cognomen.