Maurice Tiberius, AE Follis. Nicomedia. 582-602 AD.

Obv: DN TIBERI MAVRC PP AV (or similar), crowned and 
cuirassed bust facing, holding cross on globe and shield,
(cross to right	?).
Rev: Large M, ANNO to left, cross above, III to right,
B below, mintmark NIKO. SB 511, DOC 91-94.

Courtesy of slaveycoins.com, Jan. 2011