Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius (19mm, 3.83 g, 4h). Rome mint. Laureate head of Apollo right; N to left, F below chin / Horseman, holding palm frond and reins, on horse galloping right; C above, D below. Crawford 340/1; Sydenham 666; Calpurnia 11. Choice EF, lustrous.