Watch List notes:

EGYPT. Alexandria. Severus Alexander, 222-235. Tetradrachm (Billon, 24 mm, 12.91 g, 7 h), Rome mint, for Alexandria, RY 12 = 232/3. A KAI M AYP CЄOYHP AΛЄΞANΔPOC ЄYCЄB Laureate and draped bust of Severus Alexander to right, seen from behind. Rev. L ЄΒΔΟΜΟΥ Serapis seated left on throne, holding scepter in his left hand and extending his right over Cerberus at his feet to left. Dattari (Savio) 4364. Emmett 3135.12. K&G 62.185 var. (differing reverse legend). RPC VI online 10385. Rare. Slightly corroded and with a flan crack, otherwise, very fine.