Thraco-Macedonian tribes, the Mylasioi, Pangaion district. 
AR 10mm Trihemiobol, 470-450 BC. 1.02 g.

Scorpion. 
Dolphin left within incuse square.

Imhoof Monn. Gr. 60; Jameson 2339.

With permission of Roma Numismatics, March 2014
Estimate: £300.