Watch List notes:

L. Calpurnius Piso Frugi, Rome Mint, 67 BC.
Laureate head of Apollo right, behind control symbol arrowhead;
Horseman holding long palm galloping right, above control symbol, in exergue C_PISO FRVGI, below control numeral XVIIII
Crawford 408/1. Very fine. Size: D: 19.0mm; 3.53g