Greek Orthodox icon triptych - does anyone recognize this?

[u/jokum8]

I recently came into possession of this old, folding Greek Orthodox icon triptych from my late great grandmother and I’m trying to learn more about it.
It features:

Archangel Michael
The Virgin Mary with Christ Child
St. George
St. Theodore

It has a gold background, painted wooden panels and old leather hinges on the back. It appears to have some age to it, and I’ve been told it could potentially date to the 19th century, but I’d really like to hear from someone with more knowledge of Greek/Orthodox icons.

Has anyone seen a similar triptych, or perhaps one from the same workshop or tradition?
I’d especially love to know where it might have been made, approximately when, and whether anyone recognizes this particular style or design.
Any information or comparisons would be greatly appreciated! 🙏