Province Thrace
City Byzantium 
Region Thrace
Reign Severus Alexander
Obverse inscription ΙΟΥΛΙΑ ΜΑΜΑΙΑ ΑΥΓ
Obverse design diademed and draped bust of Julia Mamaea, right
Reverse inscription ΕΠΙ ΑΙ ϹΕΥΗΡΟΥ ΒΥΖΑΝΤΙΩΝ (sometimes reversed Z)
Reverse design dolphin, right, between two fishes, the above one right, the below one left

 

Reference David Lowe
Diameter 27
Weight 11.60
Axis 7
Note