Tacitus AE Antoninianus. 275-276 AD. 

IMP C M CL TACITVS AVG, radiate, draped, cuirassed bust right
AEQVITAS AVG, Aequitas standing left, holding scales 
and cornucopiae 

Mintmark XXI Gamma. 

RIC V-I, 82C

With permission of Fritz Rudolf Künker GmbH Auction 333, Lot 1398, March 2020.