Constans (337-350 A.D.) - AE3 Half-Centenionalis - 18.97mm, 1.65gr
Obverse - DN CONSTA-NS PF AVG
Constans, his pearl-diademed and cuirassed bust right.
Reverse - FEL TEMP-REPARATIO,
?SIS? in Exergue
Constans in military dress standing left,  holding phoenix on globe
and labarum with chi-rho on banner, in a galley piloted by Victory on right.
Constans
Minted in Siscia (Sisak, Croatia) between 348 and 350 A.D.
Reference:
Kent, J.P.C., "Roman Imperial Coinage", Volume 8 (RIC), Siscia, p366, nr. 234, 238, or  244
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 414CN
Carson, R.A.G., Hill, P.V., & Kent, J.P.C., "Late Roman Bronze Coinage",  Part II, p69, .nr 1130 or 1136
Van Meter, D., "Handbook of Roman Imperial Coins", p297, nr 67.
Quality: Fine-