Constans II. AE follis. 641-668 AD. Constantinople.

No legend, Constans, with long beard, crowned and in military 
dress, standing on left, holding long cross, and Constantine, 
crowned and wearing chlamys, on right, holding cross on globe; 
cross between their heads.

Large M, ANNO to left, cross above, regnal year XX to right, 
delta below, mintmark CON. 

Sear Byz 1010 var (unlisted regnal year), MIB 174b,d var (ditto).

Scarce with the cross above the M (usually a K).

Contributed by George Clegg (biggyg2), August, 2011