Stamp on a Turkish muzzle loader

[archer]

I bought it in 1968 in Istanbul in the covered bazar thinking it was a jaejar from Germany; but, have now come to understand it could well be Turkish. The inset of gold was done in an undercut channel, and looks like connected dots.

The most unique feature is its hidden peep sight in the tang. Theres another and different cartouche on the lock plate It's hard to photograph and I even tried a rubbing couldn't get it clear enough. Thank you for your help.

Steve