This is an Otto Link Vintage model, released to commemorate the 90th anniversary. Several years were spent on development, completely overhauling the overall shape, bore size, chamber, baffle, side rails, etc., to revive the classic Otto Link sound. It is only produced for tenor saxophone, and this one is metal (gold-plated finish). The "TONE MASTER" engraving is on the shank. Each mouthpiece also has a serial number engraved on it. - Model: Vintage model - Size: 7 - Material: Metal - Accessories: Ligature, cap, drawstring bag, outer box As it is a 90th-anniversary model, I thought the precision would be high, and I purchased it when it was released new. I have used it without any problems. The Tip Opening of 7 is just the right opening, and you can play low notes pianissimo in a big band without any difficulty. It cost over 60,000 yen at the time. I used a mouthpiece patch, so there are no dents or depressions. I will remove the patch and clean it before shipping. Thank you for looking.