Diocletian 284-305AD: AE Follis: Trier mint: 10.16g, 

IMP DIOCLETIANVS P AVG, laureate and cuirassed bust right.
GENIO POPVLI ROMANI, Genius standing left, tower on
head, chlamys over shoulder, holding patera and 
cornucopiae
S - F across fields, 
Mintmark ITR. 

RIC VI Trier 519a (description and attribution corrected, 
originally sold as a RIC 505 but on that, Genius wears
a modius. This coin has Genius towered. 

Clark Smith & Stephen Album Rare Coins

_trier_RIC_VI_519a_2