Divus Claudius II Gothicus, died AD 270. Antoninianus (BI; 15mm; 3.23g; 6h) Rome, 1st issue, c end 270-271. DI[VO CLAV]DI[O] Radiate bust to right. Rev. [CONSECRA]TIO Altar, with flame above, with a garland.
Bastien 2695ff.; MIR 47 pl. 39: 99mOb(1) (this coin illustrated); Normanby 1113; RIC V, I p. 233, 261; RIC online (temp.) 1276 (151 known).
From the stock of Muenzen und Medaillen AG, Basel 1972 and illustrated in MIR 47 pl. 39.