Morgan Tenor (2000's) Excalibur 5EMorgan Tenor (2000's) Excalibur 5E Here is an original Morgan 5E tenor mouthpiece. This piece measures . 092 on my gauge. This is an Excalibur model with the medium chamber. This saxophone mouthpiece model has been available since the mid 1980s and continues to be among the best selling of the Morgan tenor mouthpieces. The Excalibur model features a streamline body profile and thin interior walls for more brilliance akin to a metal mouthpiece. We