Watch List notes:

EGYPT, Alexandria. Severus Alexander. AD 222-235. Potin Tetradrachm (24mm, 12.44 g). Dated RY 7 (AD 227/8). Laureate, draped, and cuirassed bust right, seen from behind / Elpis advancing left, holding lotus blossom and raising helm of dress; L Z (date) across fields. Köln -; Dattari (Savio) 1292bis; K&G -; RPC VI Online 10362; Emmett 3101.7 (R5). Dark brown patina, a couple of minor pits and edge nicks. VF. Extremely rare, only one known to RPC (the Dattari coin).

From the Rocky Mountain Collection of Alexandrian Coins.