Constantine I AE Follis, 311 AD. Cyzicus.

Obv: FL VAL CONSTANTINVS PF AVG, laureate head right
Rev: IOVI CONSER-VATORI AVGG, Jupiter standing left, chlamys hanging from left shoulder, holding globe marked with lines of latitude abd longitude, and leaning on sceptre, eagle with wreath left, MKVB in ex. 

RIC VI Cyzicus 80, rated common

Contributed by George Clegg (biggyg2), June 2009.