Bob Reeves 41GG 5. Bob Reeves 41GG 5. Rim: 41 Cup: deep-S Backbore: 69 Shank: #5 This was custom-made by Bob Reeves as a Gary Grant type mouthpiece, except for the rim. Used a few times. Purchased directly from Bob Reeves in the US, the new price was over 50,000 yen at the time. Please consider.