I have an old Dukoff "Dukoff" Model tenor sax mouthpiece, with the original ligature, cap, and bitepiece. Looks like it's a 6*, and on the bottom of the shank is what I think is a serial #, "T646".
Can anyone hazard a guess as to it's value? I'm in the process of updating my insurance, and I would like to add this and the horn to a policy, but I want to make sure I don't get shorted on the value. (Horn is a Conn tranny).