This is a vintage Arnold Brilhart Hard Rubber model 4* for tenor sax, serial number 50067. It is physically in very nice condition. The lettering is a little on the faint but still clear. The body, beak and shank are all fantastic. The facing profile of the mouthpiece is also in great shape regarding the table, side rails and tip. This mouthpiece measures just under a modern 7 opening at .098”. While this is larger then the typical 4* Brilhart, it is the original factory facing. The Hard Rubber Brilhart features a medium open chamber with rounded inner side walls. These Hard Rubber models are akin to the sound of the Tonalin models but tend to be warmer overall.