Watch List notes:

C. Calpurnius Piso L.f. Frugi, Denario, Roma, 67 a.C.; Ag 3,91 g; Laureate head of Apollo r.; behind, control symbol, Rv. Horseman r., with palm; above, control letter; below, C PISO L F FRVG.
EF+
Crawford 408/1a
EBC+