Maurice Tiberius, AE Decanummium, 582-602 AD, Syracuse mint.

DN TIbERI MAVRIC PP AV, helmeted, draped, cuirassed bust 
facing, holding cross on globe.

Large I, ANNO to left, regnal year XXI to right.
Mintmark CON

SB 583A, MIB 142

courtesy of Asta Tintinna Numismatica and deamoneta.com, Nov, 2010