Watch List notes:

Postumus. Romano-Gallic Emperor, A.D. 260-269. AR antoninianus (21.53 mm, 3.55 g, 7 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. EF.