Watch List notes:

Gallienus. AD 253-268. Antoninianus (21mm, 3.64 g, 6h). Samosata mint. 2nd emission, AD 256-260. Radiate, draped, and cuirassed bust right / Valerian and Gallienus standing facing one another, holding eagle-tipped scepter and parazonium, respectively, and sacrificing over lighted altar between them. RIC V 447; MIR 36, 1684m; RSC 792b. Lightly toned, minor porosity. Good VF. Good silver quality for issue.

Ex Classical Numismatic Group Electronic Auction 302 (8 May 2013), lot 423.