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Constantius I, AE follis of Ticinum. AD 295-206. 

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

Mintmark ST. 

RIC VI Ticinum 30a; Sear 14047.
Scarce.