Watch List notes:

L. Calpurnius Piso L.f. L.n. Frugi, Denarius, Rome, 90 BC; AR (g 3,98; mm 19; h 8); Laureate head of Apollo r.; behind, control symbol; before, control letter, Rv. Horseman galloping r., holding palm branch; below, L PISO FRVGI / control letter; above, control symbol. Crawford 340/1; Calpurnia 12; Sydenham 669a.
Large flan, lustrous, about fdc.