Crude partial legend, Heraclius, crowned and in military attire, with moustache and long beard, holding long cross, on left and Heraclius Constantine, crowned and wearing chlamys, with short beard, holding cross on globe, on right, both standing facing // Large M, ANNO to left, Chi Rho above, regnal year to right, officina letter A below; mintmark TES. 32mm, 10.86 grams. Thessalonica mint, minted ca.629/630 CE. Sear 810.

Overstruck on an earlier follis (of Maurice Tiberius?).

This class of follis (9-11 grams) was introduced in year twenty (629-630) in an effort to return the AE coinage to its earlier weight and value. In year 21, the weight fell to 6-8 grams, two years later to approximately 4.5-6 grams.