Numerian, as Caesar, AE Antoninianus. 238 AD. 

Obv: NVMERIANVS NOB CAES, radiate draped bust right 
rev: VIRTVS AVGG, Numerian standing right receiving Victory on globe 
 from Jupiter, * above, XXI in ex. 

RIC 377, Cohen 107.

weight: 4.1 g
diameter: 21.2 mm
die axis: 0 degrees
 
Contributed by Andrew Thall, April, 2003.