Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius (19mm, 3.91 g, 4h). Rome mint. Laureate head of Apollo right; XXXVIIII to left / Horseman galloping right, holding palm frond and reins; LVII above, ROMA monogram below. Crawford 340/1; Sydenham 661; Calpurnia 12; RBW 1256 var. (control numbers). Good VF, attractive iridescent tone. Well struck.