M. Piso M.f. Frugi. AR Denarius, 61 BC. D/ Terminal bust of Mercury right, wearing winged diadem; behind, star and wreath; below chin, calyx. R/ M PISO M F/ FRVGI. Sacrificial knife and patera; all within wreath. Cr. 418/2b; B. (Calpurnia) 23. AR. g. 3.65 mm. 17.50 RR. Very rare. Prettily toned. VF.