Watch List notes:

Gallienus. AD 253-268. Antoninianus (22mm, 3.82 g, 12h). Samosata mint. 2nd emission, AD 256-260. Radiate, draped, and cuirassed bust right / Gallienaus and Valerian I, each laureate and in military attire, standing vis-à-vis; Gallienus holding spear and globe; Valerian holding Victory and transverse spear. RIC V 456; MIR 36, 1687m; RSC 1310. In NGC encapsulation, 2077130-007, graded MS, Strike: 5/5; Surface: 4/5.