Province Bithynia-Pontus
City Nicaea 
Region Bithynia
Reign Severus Alexander
Obverse inscription ΙΟΥΛΙΑ ΜΑΜΑΙΑ ΑΥΓ
Obverse design draped bust of Julia Mamaea, r.
Reverse inscription ΝΙΚΑΙΕΩΝ (or ΝΙΚΑΙΕΩΝ)
Reverse design three military standards, topped by wreaths

 

Museum British Museum, London (UK)
Inventory no. 1847,1101.243
Reference BMC 106 = Rec 628.1
Diameter 21
Weight 4.89
Axis 7
External URI of the coin https://www.britishmuseum.org/collection/object/C_1847-1101-243 
Note