Byzantine Empire. Constans II, 641-668 AD. AE Follis, Constantinople mint. 18mm, 4.4 g.

obv: Constans bust facing, with long beard, 

plumed helmet with no cross, holding cross on globe, K to right.

rev: Large M, the busts of Heraclius, Constantine IV and Tiberius above, 

each wearing crown and chlamys and holding cross on globe.

SB 1014.