Constantine I, AE follis, London, 315 AD.

IMP CONSTANTINVS AVG, laureate, cuirassed bust right.
GENIO-POP ROM, Genius standing left, modius on head, 
loins draped, holding patera and cornucopiae.
S-F across fields.
Mintmark MSL.

Toone 37; Bourton on the Water hoard 1432; Sarzeau hoard 1831; RIC VII London 30 var (obv. legend).
Very Rare (R4)

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