Watch List notes:

PTOLEMAIC KINGS of EGYPT. Ptolemy I Soter. As satrap, 323-305 BC. AR Tetradrachm (28mm, 15.55 g, 12h). In the name of Alexander III of Macedon. Memphis or Alexandreia mint. Struck circa 321-317 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; vertical thunderbolt in left field, PY below throne. Svoronos 20; Zervos Issue 14, dies 260/– (unlisted rev. die); SNG Copenhagen 11 var. (control below throne); Boston MFA 2249 = Warren 1314 (same obv. die); Jameson 998 (same obv. die); Pozzi 3179 (same obv. die). VF, toned, rough. High relief obverse.

From the collection of Dr. Will Gordon. Ex Classical Numismatic Group Electronic Auction 126 (11 September 2005), lot 98.