Purchased in October 2024 at a musical instrument store in Japan, this is a Vincent Bach trombone/euphonium mouthpiece. It's a large shank (6-1/2AL) with gold plating. The lip contact is very smooth. It's in excellent condition, having only been used 3 or 4 times for practice. It has been washed with water. The retail price was approximately 22,000 yen. I am selling it as I will no longer be using it. Vincent Bach Trombone Mouthpiece Vincent Bach Euphonium Mouthpiece Trombone Mouthpiece Gold Plated Euphonium Mouthpiece Gold Plated