This is a true handmade Dave Guardala post-bop mouthpiece for the tenor sax, serial number 13614. This piece is in outstanding condition with nearly all of its original gold plating intact. The original bite plate also shows virtually no wear. The piece measures out exactly to spec at .100". The break is percectly even and the table is flat. These early handmade Guardala pieces are definnitely getting harder and harder to find, and to see one in this kind of condition is quite rare.