Vintage Brilhart Hard Rubber 3 Alto Sax Mouthpiece - Serial #  59xxxVery Good condition, with only some mild surface blemishes.Facing is original and unaltered.Tip measures approximately ____ on my gauge.From the fabulous authoritative mouthpiece website theowanne.com The classic hard rubber Brilhart model was stamped “Hard Rubber” on the shank. These used an amazing hard rubber compound that when ground to dust smells very sweet.  These had a relatively high floor for the period, giving them great projection.   They had a very short facing curve though, so tend to play better when a longer facing is added.  These had a large round chamber with rounded inner-side walls very much like the Otto Links. The floor was a bit more rounded though.  These are arguably as good or better players than the ‘Slant Signature’ Otto Links.  Just needs some light cleaning. Please write with any questions.