Constantius I, Rome, AE follis. 302-303 AD.

CONSTANTIVS NOB CAES, Laurate bust, right
SAC MON VRB AVGG ET CAESS NN, Moneta standing left, 
holding scales and cornucopiae. 
Star in right field.
Mintmark RT

RIC VI Rome 106a.

Seller: educationalcoin, NY, on ebay, Jan 2011.