Constans, AE4, Cyzicus. 335-341 AD.

FL IVL CONSTANS NOB C, pearl diademed, draped, cuirassed 
bust right.
GLOR-dot IA EXERCITVS, two soldiers holding spears and shields with one standard between them. O on banner.
Mintmark: SMKB.

RIC VII Cyzicus 143, rated R4.
Note: the "diadem" is actually a laurel wreath 
resembling a pearl diadem. This is characteristic of
Cyzicus.

Contributed by Frans Diederik of the Forum Ancient Coins, Okt, 2011