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Magnus Maximus, AE4 of Rome. 13 mm, 1.6 g. AD 383-388. 

DN MAG MA-XIMVS PF AVG, pearl-diademed, draped, cuirassed bust right.
SPES ROMANORVM, campgate, five layers, two turrets, star above, 
no doors. 

Mintmark RT.

RIC IX Rome 59; Sear 20658.
Rare.