Constantine I, AE follis, London, 317 AD.

CONSTANTINVS P AVG, laureate, draped, cuirassed bust right.
SOL INVIC-TO COMITI, Sol standing left, holding globe and raising hand.
S-P across fields.
Mintmark PLN

RIC VII London 110.
Very rare (R4).

With permission of ArtCoins Roma, Auction 6, Dec. 2012.