Divus Constantius I Chlorus, struck by Maxentius, Rome. 310-311 AD.

IMP MAXENTIVS DIVO CONSTANTIO COGN, veiled bust of Constantius 
Chlorus right. 
AETERNAE MEMORIAE, Domed shrine, hexastyle (6 columns), with 
flat-topped doors, surmounted by eagle, wings spread, standing 
right. 
Mintmark RET.

RIC VI Rome 252
Rated Rare.

With permission of Ancient Imports, May 2009