Watch List notes:

Gallienus. AD 253-268. Antoninianus (22mm, 2.77 g, 12h). "Animal/ Mythical" series. Rome mint, 4th officina. 10th emission, AD 267-268. Radiate head right / Griffin advancing left; Δ in exergue. RIC V 165; MIR 36, 718z; RSC 77. Some silvering. Good VF.

From the Dr. Michael Slavin Collection (with a John Quincy Adams Collection ticket).