Maximianus (286-305, 306-308, 310 A.D.) -  Pre-Reform AE Antoninianus of his 1st reign - 21.08mm, 3.48gr
Obverse
IMP C M A MAXIMIANVS PF AVG
Maximianus, his radiate and cuirassed bust right
Reverse
CONCORDIA MILITVM,
I in field, XXI in exergue
Maximian, standing right in military dress receving small victory on globe
from Jupiter, standing left, leaning on spear in left hand.

Minted at officina I in Antioch (Antakya, Turkey) in 293 A.D.
Reference: 
Sutherland, C.H.V., "Roman Imperial Coinage", Volume 5 (RIC), Part II, p294, nr 621
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p308, nr. 3611, variation.
Van Meter, D., "Handbook of Roman Imperial Coins", p278, nr. 21.
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  unlisted (B52, O32, R022, T102, M02)
Quality: Fine+