Neandria, Troas. AR hemidrachm, 11.5 mm, 1.85 g. 400-310 BC. 

Laureate head of Apollo right.
NEAN above horse grazing right within incuse square. 

BMC 1; Demeester 99.

With permission of Numismatica Ars Classica - Auction 82, Lot 165, May 2015.
Extremely rare denomination. 
Estimate: 1250 CHF.