Constantine AE follis. Summer, 307 AD. 

Obv: FL VAL CONSTANTINVS NOB C, laureate, cuirassed bust right 
Rev: MARTI PACIF, Mars lunging left, holding up branch in right hand, 
 spear and shield in left
Mintmark: PLN. 

RIC VI London 94, rated rare.

Contributed by Dane for George Clegg (biggyg2), October 2007