Thank you all for the kind comments. This gun DID take a lot of work to refurbish. It was a real mess when I received it.
I use the term Tufuk as to loosly describe an Ottoman style shoulder gun done in the Turkish manner. My general understanding of the Tufuk vs Shishane terms is used to describe a rifled versus smoothbore barrel. But, according to my reference material the terms can also be used to describe the differences in stock design. There also seems to be other names/spellings/pronounceations for the same guns depending on which area of the Ottoman Empire you happen to be standing in at the moment. LOL
Which make it all the more confusing when studying/researching these guns.
Rick.