・Immediate purchase is welcome!! This item is only available today, so it's first-come, first-served!! ・Extremely rare vintage mouthpiece!! Yamaha Japan / YAMAHA JAPAN 11 / Gold color (rare item, good condition, fully cleaned, tested) is up for sale!! ・The moderate rim thickness and shallow U-shaped cup make it very easy to play, and it's a valuable asset!! ・There are a few dents on the rim, but they do not affect playing at all, so please rest assured (not recommended for those who are sensitive to such things!!). ・In my opinion, I feel that it was probably originally a silver-plated vintage mouthpiece (not recommended for those who are sensitive to such things!!). ・My impression after testing it is that it plays very well, and you can easily express the tone from the high range to the low range without wavering!! ・First of all, there are no mouthpieces currently available that are easy to play!! ・I highly recommend this extremely rare vintage mouthpiece!!