This is a vintage Brilhart Tonalin "Personaline" mouthpiece for the tenor sax, serial number 62766. This piece is very uncommon in that in has a slight rollover baffle.
You will not find many Brilhart Personaline's in this nice of physical condition. There are just a couple extremely light scratches on top of the mouthpiece, and that's about it! There are no marks on the original "wood grain" bite plate, and most of the gold lettering remains in pristine shape. The tip looks spectacular. The photos do not do this piece justice.