This is an original Designed by Arnold Brilhart Tonalin 4* Alto Sax moutpiece. This piece is completely original, and hasn't been used very much at all. It is one of the earliest Brilhart Tonalins we have ever seen. Showing no serial number, and stamped Great Neck N.Y. on the shank, it is probably one of the first ones ever produced. This Tonalin also doesn't even have the black biteplate inlay on the beak. This is extremely rare!!! This is definitely a very cool, rare vintage Brilhart Alto mouthpiece.