Watch List notes:

EGYPT, Alexandria. Julia Mamaea. Augusta, AD 222-235. Potin Tetradrachm (23mm, 11.42 g, 12h). Dated RY 4 of Severus Alexander (AD 224/225). Draped bust right, wearing stephane / Draped bust of Serapis right, wearing ornate calathus; L ∆ (date) across field. Köln –; Dattari (Savio) 4508; K&G 64.12; Emmett 3224.4 (R5). Dark gray-brown surfaces, pitted. VF. Extremely rare type for this regnal year.