Watch List notes:

EGYPT, Alexandria. Maximianus. First reign, AD 286-305. Potin Tetradrachm (18.5mm, 6.95 g, 1h). Dated RY 4 (AD 288/289). Laureate, draped, and cuirassed bust right, seen from behind / Alexandria standing facing, head left, holding bust of Serapis and scepter; L Δ (date) across fields. Köln 3299-3300; Dattari (Savio) 5833; K&G 120.33; Emmett 4093.4. Brown patina. VF.

From the Rocky Mountain Collection of Alexandrian Coins, purchased from William Rosenblum.