Constantine I, AE3. Constantinople, 330-335 AD.

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. O on banners.

Mintmark: CONS delta dot (unlisted officina).

RIC VII Constantinople 73 var (officina), rated R4.

From Dane's collection, August 2010.

Known mintmarks for this RIC number:
CONSA dot
CONSB dot
CONS delta dot<- This coin, not in RIC.
CONS gamma dot
CONSH dot