Model Number: Willie's PJ Silver Plated Signature model supervised by Mr. Otihiko Fujita Inner Diameter: 17.53mm Throat Diameter: 4.2mm Cup Shape: U Cup Shank: STD *STD (Suitable for 80% of horns including Wenzel Meinl, Hans Hoyer, Wilson, Paxman, Holton, etc. I used it on an American shank instrument, and it fit perfectly.) I haven't had it for a month yet. I think it's in good condition. I bought it for 33,000 yen. I first bought the PM model from the same line, and I felt it was a bit large, so I bought this one. However, I felt it was smaller than I expected, so I'm selling it because I won't be using it in the future. This model didn't suit me, but I'm currently using PE. I think it's a good mouthpiece, with clever design in the cup and resistance. There are some scratches on the shank because I've attached it to the instrument a few times. I will ship it in the original box.