Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius (18mm, 3.93 g, 9h). Rome mint. Laureate head of Apollo right; trident to left / Horseman galloping right, holding palm frond and reins; XXXXVIII below. Crawford 340/1; Sydenham 663; Calpurnia 11. Lightly toned with a touch of iridescence, struck slightly off center. Near EF.