Constans II, 641-668, AE Follis, Syracuse. 21mm, 4.03 g.

No legend, Constans with long beard, on left, left hand on hip, crowned and in military dress, holding long cross, and Constantine IV, unbearded and crowned, on right, holding holding cross on globe.
Large M, with Heraclius, crowned, wearing chlamys, standing on the left, holding cross on globe, and Tiberius, crowned, wearing chlamys, standing on the right, holding cross on globe.
TKw monogram above.
Mintmark SCL. 

SB 1110, DOC 181.

With permission of cngcoins.com, auction 478, Lot 598, Oct 2020