Revelle soprano sax mouthpiece? Hard Rubber

This mouthpiece is hard rubber and by the bore/chamber I expect it is pretty old but I've never heard of the brand before. It plays really well but very dark and I need a smaller chamber so I gave it a small baffle and it plays very well and very well in tune too. It's a very short shank compared to my modern soprano pieces and the backbore becomes the chamber (no change in size between chamber and backbore).

Anyone here ever hear of this brand before? Know anything about it?