This is a pretty nice example and though rated common, it is not that common.
Constantine I
Posthumous issue
15x16mm 1.6g
A.D. 347- 348
DIVO CONSTANTINVS PT AVGG; Veiled head right.
VN-MR [VENERANDAE MEMORIAE] Constantine veiled, standing right.
In ex. SMKA
RIC VIII Cyzicus 46