Watch List notes:

KINGS of MACEDON. Antigonos I Monophthalmos. As Strategos of Asia, 320-306/5 BC. AR Tetradrachm (25.5mm, 17.18 g, 1h). In the name and types of Alexander III. Sidon mint. Dated RY 4 of an uncertain king (306/5 BC). Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, Δ (date) above M; ΣI below throne. Price 3526; Newell, Dated 70 (obv. die XXXIII); DCA 877. VF, struck from worn obverse die, reverse off center. Very rare, only one in Pella database, two in CoinArchives (one of which is the present coin).

From the collection of Will Gordon. Ex Classical Numismatic Group 72 (14 June 2006), lot 413.