Watch List notes:

EGYPT, Alexandria. Maximianus. First reign, AD 286-305. Potin Tetradrachm (20mm, 8.68 g, 11h). Dated RY 7 (AD 291/292). Laureate, draped, and cuirassed bust right, seen from behind / Nike advancing left, holding wreath and palm frond over shoulder, star to right; L Z (date) in left field. Köln 3320-3321; Dattari (Savio) 5948; K&G 120.63; Emmett 4148.7 (R2). Light red-brown patina. Good VF. Scarce.

From the Rocky Mountain Collection of Alexandrian Coins.

Emmett lists this type as scarce (R2) but only one is found at CoinArchives, in far inferior condition to this coin.