C.G. Conn Helleberg Series 【7B】 Tuba Mouthpiece, Gold Plated There are small scratches (polishing scratches), but I think it will not affect the performance. There is a mark like a scratch slightly above the shank. The gold plating is thin, but it has not peeled off. The following is from the website: -------------------------- The origin of the American type, Conn Helleberg. This model is said to be the closest to the original model of the Helleberg type, which is currently one of the mainstream among tuba players around the world. Designed by August Helleberg, former tuba player of the Chicago Symphony Orchestra, this model is characterized by its very smooth breath and soft, rich tone. Based on this model, many mouthpieces that are currently popular have been created, and it can be said that it is one of the origins of all American types of mouthpieces. There are two types: Helleberg, which is close to the original specifications, and 7B, which aims for a more compact tone and is suitable for playing not only B and C tubas but also Es and F tubas. * Helleberg 7B For B.C.Es.F tuba Rim inner diameter: 32.0mm Throat diameter: 8.3mm Finish: Gold plated Cup: Medium V cup Shank: American -------------------------- #Tuba #Tuba #Mouthpiece #Conn #HELLEBERG