Watch List notes:

EGYPT. Alexandria. Severus Alexander, 222-235. Tetradrachm (Billon, 25 mm, 13.12 g, 12 h), Rome mint, RY 4 = 224-5. A KAI M AYP CЄOYHP AΛЄZANΔPOC ЄY CЄB Laureate and draped bust of Severus Alexander to right, seen from behind. Rev. L TЄTAPTOY Serapis enthroned left, holding scepter in left hand and extending his right toward Cerberus seated at his feet. Dattari (Savio) 4359. Emmett 3135.4. K&G 62.53. Somewhat corroded, otherwise, very fine.