20 Nummi - Justin II and Aelia Sophia Cyzicus

Justin II ruled during one of Byzantium's more turbulent stretches — the Avars were pressing from the north, the Lombards had just dismembered Byzantine Italy, and the Sassanids would eventually force a humiliating peace payment. His mental health collapsed visibly by the early 570s, leaving Sophia increasingly operative as co-ruler, which is precisely why her inclusion on the coinage was not ceremonial. Cyzicus, situated on the Propontis, was a major provincial mint throughout this period and struck prolifically to supply Anatolia.

The BCV 373 attribution covers a fairly wide date window, and individual pieces within it can sometimes be assigned more narrowly by officina letter.