Watch List notes:

D. Silanus L.f. 91 BC. Æ As (27mm, 10.04 g, 11h). Rome mint. Laureate head of bearded Janus; I (mark of value) above / Prow of galley right; D•SILANVS•L[•F] above. Crawford 337/5 var. (reverse legend); Sydenham 649 var. (same); Types as RBW 1235. VF, dark green patina with touches of red, weakly struck in areas. Rare variety with the NV in SILANVS ligate.