Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius (17.5mm, 4.09 g, 8h). Rome mint. Laureate head of Apollo right; bow to left / Horseman galloping right, holding palm frond and reins; XII below. Crawford 340/1; Sydenham 663; Calpurnia 11; cf. RBW 1257 (for type). Toned, minor scratches and marks, minor lamination error on reverse. VF.

From the Anthony Stewart Collection, purchased from Imperator Coins, June 2011.