Dikaia, Thrace. AR hemidrachm or triobol, 1.84 g. ca 490-475 BC. 

Bearded head of Herakles right, wearing lionskin headdress, D to right. 
Rooster standing right with worm in its beak, all in dotted linear square in square incuse. 

SNG Lockett 1187 (this coin); BMC (Selymbria) 4; May 27 in NC 1965.

With permission of Numismatica Ars Classica auction 124, Lot 97, June 2021.