Constantine I, Cyzicus mint, AD 330-335.

CONSTANTI-NVS MAX AVG, rosette-diademed, draped and cuirassed bust right.
GLOR-IA EXERC-ITVS, two soldiers facing each other, each holding 
spear and shield, two standards between them with O on banners.

Mintmark dot SMKS.

RIC VII Cyzicus 94, rated R4. 

Contributed by George Clegg (biggyg2), November, 2014