Dikaia, Chalcides, (as Thrace), AR Trihemiobol, ca. 480-450 BC. 10mm, 0.51g. 

Rooster standing right. 
ID-KA in the four quarters of a quadripartite incuse 
square. 
Imhoof, Monnaies Grecques, 48a.

Moushmov -; Mionnet -; Traité -; 
courtesy of London Ancient Coins on deamoneta.com, Jun, 2012
Auction 95, lot 84.