This is a gold-plated Volare BT-01R. It's for F and E♭ tubas. Gold models seem to be less common these days. Furthermore, gold plating for tuba mouthpieces is rare, with the market price exceeding 40,000 yen. This particular mouthpiece has a strong plating, making it quite resistant to peeling. (The seller has purchased Volare mouthpieces 10 times and has experienced plating peeling 4 times in the past. They are currently using a re-plated BT-01F.) The shank shows signs of use, but overall, it's in relatively good condition. I'm selling it due to a lack of funds. In terms of playing feel, it resonates well from top to bottom, producing a rich, dense sound with overtones. It gives the impression of being easier to control the tone compared to Volare-type Sader's mouthpieces or solo mouthpieces with flat rims. The following is quoted from the website: Inner rim diameter: 32.03mm Rim width: 8.35mm Cup: Shallow Throat diameter: 7.50mm The BT-01R is a type that has the same specifications as the Volare's representative model, the BT-01F, but with a rounded rim. It was a big surprise that the sound characteristics differed, even though they should have the same specifications. The BT-01F is characterized by a bright and powerful sound, while this mouthpiece is characterized by a very gentle and sweet sound reminiscent of the European countryside, and it also produces a good volume. ⚠︎Box not included It will be wrapped in packing materials and shipped.