Byzantine
Tiberius II Constantine (578-582 AD). Nicomedia. Dated RY 6 (579-580 AD)
AE Follis (31mm 15.82g)
Obv: Crowned, mantled bust facing, holding mappa and eagle-tipped sceptre
Rev: Large M, ANNO left, cross above, U year to right, mintmark NIKOA
SB 441