Hi Basil, I did get an answer on another board , this is not my
work. but a gentleman that uses the
handle Severus Alexander.
None of our experts have chimed in, I see, so I'll offer my 2 cents. The coin most probably depicts
Heraclius with
Heraclius Constantine. I think there are two possibilities, 1) the Seleucia Isauriae
mint, or 2) a Syrian imitation struck by the Sassanids,
Pottier Class IV(2).
The Seleucia Isauriae
mint should have a
mint signature something like SЄLISЧ, but I have certainly seem some wild ones, and a double or
overstrike (quite common) could make these look like your coin.
A secondary possibility: the Syrian imitations issued during the
Sasanian occupation can vary quite widely, and could look like your coin. I'd suggest looking at
Pottier's paper Le monnayage de la Syrie sous l'occupation Perse, available here:
https://www.persee.fr/doc/numi_0484-8942_2010_num_6_166_2946 .
He gave
good visuals but I do not have permission to use them.
So he agrees with you but gave another
mint possibility.
Thanks for chiming in .
Simon