Bach 6-1/2AL Gold Trombone Euphonium Manufacturer's Suggested Retail Price: ¥42,900 This is a mouthpiece in very good condition, with no scratches on the shank. According to Bach's official website: 6-1/2AL MD 25.40 MW: A rather round rim. This mouthpiece features a rim and cup shape similar to the 6 1/2A, with a larger "G" throat (6.63mm) and a #420 (darker) backbore, suitable for players seeking a Teutonic (German) tone. It has a powerful yet mellow roundness, and is also suitable for euphonium players seeking a sound that carries well. It produces a bright, yet thick and solid tone that resonates well from the high to mid-low registers. In particular, the comfortable feel and smooth texture make it easy to play, and it's incomparable to silver plating. I tried it out, but since my main instrument is over 50 years old, the CORP era mouthpiece suits it better, so I've decided to sell this one. I think this is a great deal. Please take advantage of this opportunity.