Apollonia Pontika AR Tetradrachm. ca 400-350 BC. Magistrate Diogenes 25 mm, 17.09 g. 

Laureate head of Apollo right.
DIOGENHS, upright anchor, A and crayfish to left and right.

Paunov 102 (this coin).

With permission of Helios Numismatik auction 7, Lot 10, Dec. 2011.