Watch List notes:

L. Calpurnius Piso L.f. L.n. Frugi, Denarius, Rome, 90 BC; AR (g 3,76; mm 20; h 12); Laureate head of Apollo r.; before and behind, control symbol, Rv. Horseman galloping r., holding palm branch; below, L PISO FRVGI / Q; above, control symbol. Crawford 340/1; Calpurnia 11; Sydenham 669.
Lustrous, minor flattening, extremely fine - good extremely fine.