Watch List notes:

Gallienus. AD 253-268. Antoninianus (20.5mm, 3.39 g, 12h). Mediolanum (Milan) mint. Issue 2(1), AD 260-1. Radiate and cuirassed bust right, holding spear over left shoulder / VIRT GALLIENI AVG, emperor on horseback to right, spearing fallen enemy. MIR 36, 966y; RIC V (sole reign) 529 var. (bust type); Cunetio 1569 var. (same). Toned, spot of verdigris on obverse. VF.

From the Centurion Collection. Ex N. M. McQ. Holmes Collection (Classical Numismatic Group Electronic Auction 442, 17 April 2019), lot 326, purchased from David Miller 1999.