MC Gregory 518M alto Tenor Selmer began producing these long

Selmer began producing these long shanked pieces in the 1960's in an effort to help the user with intonation

The original ligature is missing but this mouthpiece can take a vintage ToneMaster ligature or several Rovner ligatures

This piece is in like new condition and perfect for the tenor player looking for serious power and cut with a larger chamber for body as well

Ultimately

This mouthpiece measures

MC Gregory 518M alto Tenor Selmer began producing these longHere is an original MC Gregory "Master" 518M. This piece measures . 068" on my gauge. These were produced in various iterations after the Model A was discontinued. This appears to be a later one with the squared off shank. While the geometry remained the same, there seems to be less hand work on this generation, featuring slightly thicker rails and a sandblasted chamber. I believe these are the inspiration for the Vandoren small chamber design. This