Constantine I, AE follis, Trier. AD 316.

CONSTANTINVS PF AVG, laureate, cuirassed bust right.
SOLI INVI-C-TO COMITI, Sol standing left, chlamys across 
left shoulder, holding globe and raising right hand.
T-F across fields.
Mintmark BTR.

RIC VII Trier 105.
Scarce.
This rev break known only from a coin in Vienna.

Dane's collection, Oct. 2014.