Demetrios I Soter. Seleukid Kingdom. 162-150 BC. AR Drachm, 16.5mm, 3.91 g. Ektabana mint. 

Diademed head right.
BASILEWS DHMHTRIOY SWTHROS, Apollo seated left on omphalos, examining an arrow and resting hand on bow. Trace of a 
monogram in left field, CA (sideways and downward) in right field

SC 1734.2 (this coin); Hoover HGC 803a.

With permission of cngcoins.com, auction 438, Lot 204, Feb.