Watch List notes:

EGYPT, Alexandria. Valerian I. AD 253-260. Potin Tetradrachm (22mm, 10.69 g, 1h). Dated RY 7 (AD 259/60). Laureate, draped, and cuirassed bust right, seen from the front / Eagle standing left, head right, holding wreath in its beak; L Z (date) across fields. Köln 2901-2; Dattari (Savio) 5222; K&G 90.34; Emmett 3728.7. Partially silvered, underlying brown patina. VF.

From the Rocky Mountain Collection of Alexandrian Coins.