Watch List notes:

L. Calpurnius Piso L.f. L.n. Frugi, Denarius, Rome, 90 BC; Ag 3,48 g; Laureate head of Apollo r.; behind, control symbol, Rv. Horseman galloping r., holding palm branch; below, L PISO FRVGI / control numeral.
Very fine
Crawford 340/1
MBC