CA series.     AE Quadrans. Canusium mint, c. 206-195 BC.   Obv.    Head of Hercules to right; behind, three pellets.        Rev.   Prow right; above, ROMA; before, CA set horizontally and below, three pellets.     Cr. 100/4a; RBW -.     5.72 g.   20.50 mm.      RR.  Very rare. Chocolate brown patina.    VF.