Tuba Mouthpiece Perantucci PT65-S Purchased new about 8 years ago and used with YFB-821 and YFB-822. Although it's an S shank, it worked without any problems. It had been left unused, so I polished it, but as the photos show, there are some stains that couldn't be completely removed. Please understand this before purchasing. It will be shipped in a box with packing materials.