Watch List notes:

C. Calpurnius Piso L.f. Frugi, Denarius, Rome, 67 BC; AR (g 3,97; mm 19; h 4); Head of Apollo r., hair tied with band; behind, control mark, Rv. Horseman galloping r., holding palm branch; below, C PISO L F FRV / control letter. Crawford 408/1b; Calpurnia 24; Sydenham 841b.
Flattening on obverse, lustrous and high relief, good extremely fine.