Province Bithynia-Pontus
City Nicaea 
Region Bithynia
Reign Severus Alexander
Obverse inscription ΙΟΥΛΙΑ ΜΑΜΑΙΑ ΑΥΓΟΥ
Obverse design diademed and draped bust of Julia Mamaea, r.
Reverse inscription ΝΙΚΑΙΕΩΝ
Reverse design turreted City personification (?) standing facing, looking l., holding sceptre and patera over lighted altar

 

Museum Bibliothèque nationale de France, Paris (France)
Inventory no. 1109
Reference Rec 632
Diameter 25
Weight 7.45
Axis 12
External URI of the coin https://gallica.bnf.fr/ark:/12148/btv1b85555622 
Note not in Wa