Relying on 'echizento's expertise on the portraits and how I read the legends, I would say that it is:
Constans AE4 of Thessalonica. CONSTANS-PF AVG, pearl-diademed, draped, cuirassed bust right / VICTORIAE DD AVGGQ NN, Two Victories facing each other, each holding wreaths and palm branches. Palm branch upright in lower centre. Mintmark SMTS Gamma. RIC VIII Thessalonica 106.With the Gamma (apart for a little tip of the left top corner) off the flan - description copied from the Wildwinds entry.
(Instead of Gamma it could also be another officina letter though.)
Postscript:
First

&
yes, the larger picture helped to nail down the obverse legend, was able to make out the 'PF AVG' - if you look closely you see the 'F" at 3 o'clock with the 'P' above it and the 'AVG' below, the 'G' as so often just looking like a 'C'.
Edited by Medieval
11/09/2014 10:54 pm