Constans (337-350 A.D.) - AE3 Half-Centenionalis- 18.22mm, 2.74gr
Obverse - DN CONSTANS PF AVG
Constans, his pearl-diademed, draped and cuirassed bust right.
 Reverse - FEL TEMP REPARATIO,
Radiate phoenix standing right on rocky mound/pyre.
Delta SIS lowercase d in Exergue.
Constans
Minted at officina Delta in Siscia (Sisak, Croatia) between 348 and 350 A.D.
Reference:
Kent, J.P.C., "Roman Imperial Coinage", Volume 8 (RIC), Siscia, p366, nr 241, obverse Cn8/D3, reverse PM
Sear, David R., "Roman Coins and their Values" (RCV 4th Revised Edition), similar to p335, nr 3978
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 413bCN
Carson, R.A.G., Hill, P.V., & Kent, J.P.C., "Late Roman Bronze Coinage",  Part II, p69, nr 1134.
Van Meter, D., "Handbook of Roman Imperial Coins", p297, nr 69.
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p487, nr.50 var. (B04, O10, R05, T27, M12)
Quality: Very Fine+