Watch List notes:

L. Calpurnius Piso Frugi, Rome, 90 BC. AR Denarius (19mm, 3.52g, 12h). Laureate head of Apollo r.; spear-head behind. R/ Horseman galloping r., holding palm frond and reins; XVIIII below. Crawford 340/1; cf. RBW 1257; RSC Calpurnia 11. VF