Constantius I as Caesar. Rome mint. AD 299. 

Obv: CONSTANTIVS NOB CAES, laureate head right. 
Rev: GENIO POPV-LI ROMANI, Genius standing left, modius on 
head, chlamys over left shoulder, holding patera and cornucopiae. 

Mintmark T star. 

RIC VI 95a; Sear 14052.

With permission of TimeLine Auctions (www.timelineauctions.com), September, 2014