Watch List notes:

L. Calpurnius Piso Frugi, Rome, 90 BC. AR Denarius (18mm, 3.61g, 12h). Laureate head of Apollo r.; control behind and before. R/ Horseman galloping r., holding palm frond and reins; caduceus above, C below. Crawford 340/1; RBW 1262; RSC Calpurnia 11. Porous, VF; ;