Constantine I tin-plated ("silvered") Follis Cyzicus. AD 313-315.

Obv: IMP C FL VAL CONSTANTINVS P F AVG, Laureate head right. 
Rev: IOVI CONSERVATORI, Jupiter standing left, holding 
Victory on globe and sceptre; eagle at foot left with a 
wreath in its beak. 
S in right field.
Mintmark SMK.

RIC VII, 3.

With permission of Gorny & Mosch, March 2007