Constantine I AE Follis. 

Obv: CONSTANTINVS AVG, laureate, draped, cuirassed bust right 
Rev: SOLI INVIC-TO COMITI, Sol standing left, chlamys across left shoulder, 
  holding globe. 
Mintmark: PLN; T-F across fields. 

RIC VII London 94, rated c1.

Contributed by Dane for George Clegg (biggyg2), August, 2006.