His reign was troubled by financial difficulties and almost constant warfare; while he ended the war with Sasanian Persia with a victory and the cessation of two centuries of tribute, he fought extensively in the Balkans against the Avars and in Italy against the Lombards.
In 602, a dissatisfied general named Phocas usurped the throne, having Maurice and his six sons executed. This event would prove cataclysmic for the Empire, sparking a twenty-six year war with Sassanid Persia which would leave both empires devastated prior to the Muslim conquests.
Reverse: VICTORIA AVGGI, Angel standing facing, holding long P-headed cross, and cross on globe; CONOB in exergue
Die Orientation: 6 H
Weight: 4.24 g
The I at the end denotes the 10th officina.
Given that Theodosius was not raised as co-emperor until 590, it makes sense to date the coin to his reign in my opinion.
CONOB="Constantinople, 1/72 pound pure gold"
Reverse: Large mark of value K; ANNO to left, cross above, X/I to right, A in exergue.
Die Orientation: -
Weight: 5.15 g
Reverse: Large M, ANNO to left, cross above, regnal year XX (20) right, officina letter Δ below. Mintmark THEUP'.
Die Orientation: 12 H
Weight: 10.54 g