Ottoman matchlock examples.

[estcrh]

Originally Posted by Pukka Bundook

Eric,

Yes, this is the later "Damascus" style twist.
The earlier types were a stub -iron twist, as shown below;

Richard.
Manouchehr M. has some wonderful photos of Persian arms in his book when published, and some very nice photos in his series on Persian arms in Classic Arms Magazine.

Richard, here or some detailed examples from the images I posted of Ottoman matchlocks that seem to be of this type or am I wrong.