Antiochos I AR tetradrachm, Seleukid Kingdom, Pergamon mint under Philetairos, struck in the name of Seleukos I, sole reign 281-280 BC. 29 mm, 16.46 g.

Head of Herakles right, wearing lionskin headdress.
BASILEWS SELEYKOY, Zeus seated left, holding eagle and sceptre.
Helmeted head of Athena right in left field, star beneath the seat. 

SC 308a; Newell WSM 1531.

With permission of VAuctions auction 315, Lot 69, April 2015.