Watch List notes:

L. Calpurnius Piso Frugi. 90 BC. AR Denarius (20mm, 3.78 g, 1h). Rome mint. Laureate head of Apollo right; CIIII to left / Horseman galloping right, holding palm frond and reins; CXXVIII above. Crawford 340/1; Sydenham 662; Calpurnia 12. Light iridescent tone with very minor obverse marks. Superb EF.