Watch List notes:

Postumus. Romano-Gallic Emperor, A.D. 260-269. AR antoninianus (20.5 mm, 2.60 g, 6 h). Colonia Agrippinensis (Cologne) mint, struck A.D. 268. IMP C POSTVMVS P F AVG, radiate, draped, and cuirassed bust right / IOVI VICTORI, Jupiter leaning left, hurling thunderbolt to right. RIC 311; AGK 39; RSC 161a. VF. 

Ex Elwood Rafn collection.