I recently came upon an old Martin "Handcraft" Bari. Probably hasn't seen the light of day for 40 years. Anyone know about these horns, would it be worth getting fixed up? The serial number is 109666, and looking at serial number lists it looks from about 1934. I played it a bit and it played not too bad, I need to get a real mouthpiece on it though to see what it can do. Can anyone help?