Valerian I AR Antoninianus. 

IMP C P LIC VALERIANVS PF AVG, radiate, draped bust right.
ORIENS AVGG, Sol standing left, holding whip and 
raising right hand. 

RIC V-1 106; Cohen 140; Sear 9950.

With permission of ArtCoins Roma, July 2015.
Estimate: 20 EUR.