Byzantine Empire
Heraclius and Heraclius Constantine (610–641), Hexagram 615-625, Constantinople mint
Obverse: enthroned draped and facing figures of Heraclius, larger and on the left, with a simple cross-topped crown, a short beard, and holding a globus in his right hand, and of Heraclius Constantine, smaller and on the right, with a simple cross-topped crown and holding a globus in his right hand; between their heads, cross
dd NN hERACLIUS ET hERA CONST P P A
Reverse: cross potent on globe and three steps, K in right field
dEUS AdIUTA ROmANIS
Diameter 22 mm, weight 6.55 g