Watch List notes:

Macedonian Kingdom. Alexander III The Great. 336-323 BC. Tetradrachm, 17.06g (12h). Uncertain mint in Asia Minor or the Levant, c. 300-250 BC. Obv: Head of Herakles right wearing lion-skin headdress. Rx: ΑΛΕΞΑΝΔΡΟΥ Zeus enthroned left holding eagle and scepter; without symbol. Cf. Price 1473. High relief. EF

The attribution of this apparently unpublished coin is uncertain. It is not a close match to any of the dozen or so tetradrachms of Alexander the Great and Philip Arrhidaeus listed by Price whose reverses similarly omit any control or mintmark