Byzantion, Thrace; 2nd- 3rd cent. AD; AE 17mm, 3,21gr; 

Obv: Bearded male head right in border of dots.
Rev: BVZAN-TIWN, trident downwards, around the shaft
of which is entwined a dolphin. Border of dots.

BMC 50
Rare.

Courtesy of T&S Petrov, Jan. 2011