Decentius Caesar. AE21, Rome, 350-353 AD. 4.08 g.

MAG DECENTIVS N C, bare-headed, cuirassed bust right.
RENOBATIO VRBIS ROME, Roma seated left on throne, 
holding Victory on globe and spear; round shield below.

Mintmark RS.

RIC VIII 208; Bastien 469; LRBC 649.
Very rare. 

With permission of cngcoins.com, Sale 84, lot 1543, May 2010.
Ex White Mountain Collection. Estimate: $300.