Lokris, Lokri Opunti. AR obol. 11mm, 0.89 g. 375-350 BC. 

OPON, Amphora with grape bunch and ivy leaf hanging from mouth. 
Star of 16 rays with solid dot in the centre. 

BCD Lokris 28 (this coin); Hoover HGC 1003.

With permission of cngcoins.com, April-May 2016.
Estimate: $500.