Silvered bronze antoninianus, 22mm, 2.73gm, issued AD 263 Cologne mint.
Obv: IMP C POSTVMVS PF AVG, Radiate, draped and cuirassed bust facing right.
Rev: PM TRP IIII COS III PP, Mars advancing right holding traverse spear and trophy.
References: Sear 10974, RIC 57, RSC 273a.
