Hephaistia on Lemnos, Thrace, AE13. ca 386-276 BC). 2.33 g. 

Obv: Helmeted head of Athena left.
Rev: HFAI, owl standing facing.

SNG Cop 974; Hoover HGC 289. 

With permission of Numismatik Naumann, April 2016.