Province Bithynia-Pontus
City Nicaea 
Region Bithynia
Reign Severus Alexander
Obverse inscription ΙΟΥΛΙΑ ΜΑΜΑΙΑ ΑΥΓ
Obverse design diademed and draped bust of Julia Mamaea, r.
Reverse inscription ΝΙΚΑΙΕΩΝ
Reverse design Aquila between two military standards, topped by wreaths

 

Museum American Numismatic Society, New York (USA)
Inventory no. 1953.171.474
Reference
Diameter 24
Weight 8.84
Axis 12
External URI of the coin http://numismatics.org/collection/1953.171.474 
Note