This is yet another iteration of a mouthpiece that I have been collecting quite a few of lately – the Dukoff Supersonic/Zimberoff blank that was made for a number of other companies by Dukoff around the middle of last century. These are excellent mouthpieces for getting a dark, burning jazz or all around tenor sound. They are great opened up to larger tips, which is why I have several listed in different tip openings. Besides the above mentioned names, you also find this piece as Selmer Elkhart NY, Geo M Bundy, and even Buescher. This one just got opened up by Brian Powell, and it is an outstanding player.