Claudius II AE Antoninianus. Siscia.

Obv: IMP CLAVDIVS AVG - Radiate head right
Rev: AEQVITAS AVG - Aequitas standing left, holding 
scales and cornucopiae.

Siscia mint (note engraving style of the M - not Rome).

RIC V-I, 15 corrected.

Ex-Helvetica's online shop, 2007. Buyer's name lost.