Volusian billon Antoninianus, Rome, 251-253 AD. Hybrid with reverse of Trebonianus Gallus. 

Obv: IMP C C VIB VOLVSIANVS AVG, radiate, draped bust right. 
Rev: PAX AETERNA, Pax standing left, holding branch and transverse sceptre.

RIC 211; RSC 66; Sear 9757. 
Rare.

With permission of TimeLine Auctions (www.timelineauctions.com), December, 2016