Claudius II AE Antoninianus, Antioch, 2.97 g. IMP C CLAVDIVS AVG, Radiate, draped and cuirassed bust right. REGI ARTIS, Vulcan standing right, holding hammer and pincers. Z in exergue. RIC 215. This reverse is one of the rarest for Claudius II. Image rights: wildwinds.com