Nicomedia, Bithynia, modern-day İzmit, Turkey

Production of this mint

• 
  Roman Empire
  Siliqua - Constans (VOTIS/XXV/MVLTIS/XXX; Nicomedia)
• 
  Nicomedia
  Æ22 - Severus Alexander (ΤΡΙϹ ΝΕΩΚΟΡΩΝ ΝΙΚΟΜΗΔΕΩΝ)
• 
  Roman Empire
  Nummus - Constantinus I (PROVIDENTIAE AVGG; Nicomedia)
• 
  Nicomedia
  Æ29 - Philip I (ΝΙΚΟΜΗΔΕΩΝ ΔΙϹ ΝΕΩΚΟΡΩΝ)
• 
  Nicomedia
  Æ32 - Gordian III (ΝΙΚΟΜΗΔΕΩΝ ΔΙϹ ΝΕΩΚΟΡΩΝ)
• 
  Roman Empire
  Nummus - Valentinian II (GLORIA ROMANORVM; Nicomedia)
• 
  Roman Empire
  Nummus - Constantinus II (GLORIA EXERCITVS; Two standards; Nicomedia)
• 
  Koinon of Bithynia
  Cistophorus - Hadrian
• 
  Nicomedia
  Æ28 - Domitian (Η ΜΗΤΡΟΠΟΛΙΣ ΚΑΙ ΠΡΩΤΗ ΒΙΘΥΝΙ (Σ))
• 
  Nicomedia
  Æ23 - Trajan Decius (ΝΙΚΟΜΗΔΕΩΝ ΔΙϹ ΝΕΩΚΟΡΩΝ, Γ)
• 
  Roman Empire
  Aureus - Maximianus I (HERCVLI - VICTORI; Nicomedia)
• 
  Nicomedia
  Æ24 - Valerian and Gallienus (ΝΙΚΟΜΗΔΕΩΝ ΤΡΙϹ ΝΕΩΚΟΡΩΝ)

Literature

• Niels Breitenstein; 1944. Sylloge Nummorum Graecorum: Royal Collection of Coins and Medals. Danish National Museum / Volume 18. Bosporus - Bithynia. Einar Munksgaard, Kopenhaga, Denmark.