Watch List notes:

PTOLEMAIC KINGS of EGYPT. Ptolemy I Soter. As satrap, 323-305/4 BC. AR Tetradrachm (28mm, 15.99 g, 12h). In the name of Alexander III of Macedon. Memphis or Alexandreia mint. Struck circa 320/19-314/3 BC. Diademed head of the deified Alexander right, wearing elephant's skin headdress / Zeus Aëtophoros seated left; thunderbolt in left field, PY below throne. CPE 35a; Svoronos 20; Zervos Issue 14, dies 260/a; SNG Copenhagen –; Boston MFA 2248 = Warren 1313 (same dies). Toned, areas of roughness, cleaning scratches, graffito on reverse. VF. Rare early issue struck in high relief.

Ex Classical Numismatic Group Electronic Auction 327 (28 May 2014), lot 815; Coin Galleries (17 May 1983), lot 144.