Watch List notes:

PTOLEMAIC KINGS of EGYPT. Ptolemy I Soter. As satrap, 323-305/4 BC, or king, 305/4-282 BC. AR Tetradrachm (28mm, 15.61 g, 12h). Ptolemaic standard. In the name of Alexander III of Macedon. Alexandreia mint. Struck circa 306-300 BC. Diademed head of the deified Alexander right, wearing elephant skin, aegis around neck with tiny Δ in scales / Athena Alkidemos advancing right; to right, helmet, monogram, and eagle standing right on thunderbolt. CPE 69; Svoronos 162; Zervos Issue 28, dies 508/– (unlisted rev. die); SNG Copenhagen 29. Lightly toned, slight die wear. Near EF. Well centered.

From the John L. Cowan Collection, purchased from Pegasi Numismatics, 10 January 2008. Ex Antiqua FPL XIV (December 2006), no. 74; Tkalec (February 2001), lot 172.