Maurice Tiberius. AE follis, Carthage. AD 582-602. 18.17 g. Struck 597-601 AD. 

DN MAVRI Tb PP AVAG, diademed, helmeted, and cuirassed bust facing, holding cross on globe.
N-M with dots above the letters to left and right of large cross on globe. 

XX dot XX below. SB 557; MIB N117. 
Extremely rare. 

With permission of Triton VIII auction, lot 1345. Jan 2005. Sold For $4750.
Later sold by Ira & Larry Goldberg Coins & Collectibles auction 53, Lot 2078, May 2009.