Hi Sir!
Well, the overall look of the old dame seems to scream Germanic to me.
Any way we could look at the inside of the lock??
Maybe some sort of old Hessian dragoon pistol??
Ahhhhh then I look at those grooves on the frizzen/battery.....I think turks and the like were the only fellows to really do that in modern pattern flintlocks -bridaled battery and all the mech inside the lock unlike the earlier snaphounces and their like.
Could have origionally been a Germanic unit then repaired and used out in the eastern world.....who knows unless we could look at her innards.
One bonus if shes a turkish unit is that you can fully restore her and still sleep at night.