Bull butting left series.     AR Denarius, uncertain Spanish mint (Tarraco?), 202 BC.   Obv.    Helmeted head of Roma right; behind, X.        Rev.   The Dioscuri galloping right; below, bull butting left; in exergue, ROMA.     Cr. 116/1a.     3.82 g.   18.00 mm.        Sound metal. bright and lightly toned.    Good VF/VF.