Cr. 340/4 L. Calpurnius Piso Frugi Æ as, 90 B.C., Rome mint
Roman Republic Æ as(29mm, 11.87 g, 4h). L. Calpurnius Piso Frugi, moneyer, 90 B.C. Rome mint. Laureate head of bearded Janus; I above / Prow of galley right, on which stands Victory; above, L PISO; below, FRVGF. Crawford 340/4 var(FRVGF reverse legend); Sydenham 677 var; BMCRR Rome 2179-2185 var; Russo RBW 1270 var.
Ex RBW Collection, purchased from V. C. Vecchi, 11/30/1985
Note the strange reverse legend variation, FRVGF as opposed to FRVGI. Thus far I have only managed to find a single matching example, 1969.83.488 in the ANS which is a reverse(and possibly obverse) die match. In a discussion on FORVM, Andrew McCabe theorized that the engraver may have intended to cut the legend as "FRVG L F" and so the actual error was the omission of the "L". I am currently seeking images of other examples with similar legend variations so please contact me if you have found one