Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius20 (3.84mm, 12 g, 12h). Rome mint. Laureate head of Apollo right; control number behind / Naked horseman galloping right, holding palm frond; control number above, ROMA monogram below. Crawford 340/1; Sydenham 661; Calpurnia 12. VF, two parallel scratches in obverse field.