Walter Grabner

991 Wildwood Lane

Highland Park, IL 60035

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Prototypes for sale  

I have been designing and manufacturing mouthpieces on my in-house printer farm all spring and summer. I have made over 100 mouthpieces. Some are finished products and have been sold, some I have kept for my own use. But, I also have a bunch of prototypes. Not all of them are totally polished and a few have cosmetic flaws, but the ones that I have kept are excellent mouthpieces with great tone, response, and intonation. It makes no sense for me to keep them, so I will be offering them for sale here, at highly reduced prices.

 Why am I selling at such a low price? Well, I know with the epidemic that many of us have lost jobs, or are facing reduced income. All I want to do is recover some of my cost, and get a great mouthpiece into the hands of someone who will enjoy it.

Click on View CartĚ to review your selections and proceed to checkout.

Sorry, all prototypes are sold out at this time, check back later!

Prototype S4M-LE
Translucent Red,  Serial #477.

Excellent Bb Soprano clarinet mouthpiece, with a rich full tone, and very fast response, with precise intonation.

Has a few cosmetic flaws.


There is a 2 week trial period, so don't worry about getting stuck with a mouthpiece that you don't really want.

  • Plays great!
  • Responds great!
  • Tunes great!
  • Have fun!


Order below with a click of a button.

The appropriate shipping charges will be calculated when you go through the check out process, whether or not you are U.S. based or International.

Sales tax for Illinois residents will also be calculated

 Prototype S4M-LE #477