Byzantine
Heraclius with Heraclius Constantine (610-641 AD) Constantinople
AR Hexagram (23.8mm, 3.6g)
Obv: Heraclius and Heraclius Constantine seated facing on double throne, each crowned and holding globus cruciger; cross between.
Rev: Cross potent on globe above three steps; K to r.
MIB 140; DOC 64; Sear 798.