Watch List notes:

Seleucid kings of Syria, Antiochos I (281-261), Tetradrachm, Pergamon, c. 280 BC; AR (g 16,12; mm 30; h 12); Head of Herakles r., wearing leonté, dotted border, Rv. BAΣIΛEΩΣ ΣEΛEYKOY, Zeus enthroned l., holding eagle and sceptre; at l., head of Athena r. with Corinthian helmet, below the throne, oval. SC 308 d.
Very rare, old cabinet tone, fascinating coin and high relief. Good extremely fine.