Watch List notes:

Gallienus AR Antoninianus. Mediolanum, AD 260-268. [GAL]LIENVS AVG, radiate head left / [MARTI P]ROP[VGNAT], Mars walking right, holding shield and spearing fallen enemy. RIC 493 var. (bust type); MIR 36, 949m; Cunetio 1567 var. (same). 4.41g, 22mm, 1h.

Very Fine; hairline on reverse. Extremely Rare.

From the N. M. McQ. Holmes Collection;
Ex Classical Numismatic Group, Auction 442, 17 April 2019, Lot 320;
Privately purchased from Byzantium (UK), 1991.