Pitane, Mysia. AR obol or hemiobol, 4th century BC. 7 mm, 0.41 g.

Youthful head of Zeus-Ammon right. 
PITANA around pentagram in incuse square.

SNG Turkey 9-III, 1045; Arikanturk Coll. 3285; Head, HN p. 357.
Very rare. 

Sold by Gorny & Mosch auction 211, Lot 305, March 2013.