Here is a coin I recently got through @John Anthony's auction. It is a 40 nummi piece of Heraclius and Heraclius Constantine, 610-641 C.E.
I thought about bidding on that one, I kind of want one of the type with Hercalius and his kid. Here's one I got from my secret Santa last year, it has father and son along with mom. Byzantine AE Follis,Heraclius, 610-641 AD O: Heraclius Constantine, Hercalius, and Martina. R: Large M, monogram to left. Constantinople mint. SB 808
