Watch List notes:

Gallienus. AD 253-268. Antoninianus (21mm, 3.63 g, 6h). Samosata mint. Issue 3, AD 260. IMP C P LIC GALLIENVS P F AVG, radiate, draped, and cuirassed bust right / IOVI CONSERVATORI, emperor standing right, holding short sceptre, receiving globe from Jupiter, standing left, holding long sceptre; wreath in upper field. MIR1697Ab; RIC V (joint reign) 440; Cunetio 1874. Good VF, iridescent tone, reasonably good silver quality. Extremely rare, only one piece noted by MIR (in the KHM, Vienna).

Bought from Spink, 1980.