Maximianus AE Antoninianus AD 285-308. Cyzicus. 

IMP C M A MAXIMIANVS AVG, radiate, draped and cuirassed bust right. 
CONCORDIA MILITVM, emperor standing right, holding parazonium, receiving Victory on globe from Jupiter, standing left, holding sceptre. 
Epsilon in lower centre. Mintmark XXI. 

RIC V-2, 607; Cohen 54.

EidMar auction on biddr.com, April 2025.