We found this in Ralph Morgan's Collection of mouthpieces.  I had assumed it was a standard Vintage Model baritone Saxophone Mouthpiece; however, this one is different as it is made of hard rubber and had a much larger chamber.  Tip opening measures .110.  The normal "Vintage Model" is a resin piece, but this one is rubber.   New condition.  I have not seen this model in rubber, nor have I seen it with this large of a chamber.

SKU MBA71