Tiberius II Constantine, AE half-follis, Rome mint, 578-582 AD.

DM TIB CONSTANT PP A, Crowned, cuirassed bust facing, 
holding cross on globe and shield.
Large X-dot-X, cross above.
Mintmark ROM.

Sear Byz 467, DOC 61

Sold by Gorny & Mosch auction 259, Lot 4045, Oct. 2018.