Hi Rick,
Good catch as always.
I have a Yemeni matchlock with the same kind of butt, but yours seems more Indian, or Indo Arab as they say, what do you think?
You posted some similar guns in the past...
http://www.vikingsword.com/vb/showthread.php?t=24257
I have new guns that I have to post, including Indian pistol.
Best wishes,
Kubur