This is a late 30’s vintage Otto Link Master Four Star Model tenor sax mouthpiece, SN 3D67. It was originally a table stamped 4* and was opened up by Ted Klum to 0.085. The facing length is 46.
The bite plate is all original and shows only very minor scratches. The table, tip and rails are excellent. This mouthpiece is very reminiscent of that cool Lester Young sound.