TM17>Rome, 222-235AD, Bithynia, Nicaea, AE20 The Time Machine Brings to you. Rome, 222-235AD, Bithynia, Nicaea, Severus Alexander, AE20, AVF Rad., draped bust r./Rev. Eagle between two standards, SNG Cop 519, dark green patina (id:0444) Est. 50