Constantine I, AE follis of Constantinople. AD 330-335.

CONSTANTI-NVS MAX AVG, rosette-diademed, draped, cuirassed bust right.
GLOR-IA EXERC-ITVS, two soldiers holding spears and shields 
with two standards between them.
Mintmark: CONS gamma.

RIC VII Constantinople 59.
RIC rates this coin as R5 but quite a few are known.

Contributed by Richard deMarco of carpediem Numismatics, Feb. 2016.