Constantine 1 307-337 AD.
Ae Follis of Trier minted between 317/8 AD.
Ob:IMP CONSTANTINVS AVG Laurate & curiassed bust left.
Rev: SOL INVICTO COMITI (The invincible sun is my companion)
Sol standing left chalmys across left shoulder, holding globe and raising right hand.
T F in fields = Temporum Felisitas (Times of prosperity)
ATR in exurge = (1st office of Trier mint)
RIC Trier 162.
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