Constantine I AE Follis 321-324 AD Cyzicus Mint Dr. L. Ramskold #LR70
Reference: RIC VII Cyzicus 14, rated very rare, R3 Jupiter standing left, holding Victory on globe & sceptre. Eagle to left, captive to right. X over II Mu in field above. Mintmark SMKB. Radiate, draped & cuirassed bust right.