Postumus, Bi. Antoninianus, Cologne mint, AD 267.

IMP C POSTVMVS P F AVG, radiate, draped and cuirassed bust right.
PAX AVG, Pax standing left, holding branch and transverse sceptre.

P in left field 

RIC V-II, 318.

With permission of TimeLine Auctions 
(www.timelineauctions.com), November. 2019