Atelier Momo Trombone Mouthpiece 47J for small bore trombones. Purchased new in 2023 and added to my mouthpiece collection, but I am selling it to organize my collection. It is in very beautiful condition. Specifications: ■ Model: 47J ☆ Acoustically treated Jazz model ■ Size: Inner diameter 24.8mm, bore 5.8mm ■ Plating: Silver ■ Condition: There are no scratches, dents, or plating剥がれ. There are very slight scratches on the shank from insertion into the instrument, but I don't think it's a concern. ■ Accessories: Will be sent in the original box at the time of purchase. Thank you very much.