Babylon, AR tetradrachm or double shekel. 23.7 mm, 16.28 g. Babylon mint, Struck ca. 312-306 BC under the Seleukid king Seleukos I Nikator. 312-280 BC. 

No legend, Baaltars seated left on backless throne, right 
leg drawn back; holding sceptre and resting hand on seat, 
all within dotted border.
No legend, Lion walking left, Gamma above, all within dotted border.

Symbol var of Babelon Rois 289-290; Pozzi 2871; SNG Spaer 90-92; SNG Cop 264. Type Sear 6142.

With permission of Agora Auctions, auction 86, Lot 71, May 2019.