Watch List notes:

Gallienus. AD 253-268. AR Antoninianus (22mm, 2.52 g, 6h). Colonia Agrippinensis (Cologne) mint. 2nd emission, AD 258-259. Radiate, draped, and cuirassed bust right / Mars standing left, holding shield set on ground within tetrastyle temple. RIC V 10; MIR 36, 889h; RSC 149a. VF, area of light toning.