This is a fantastic all original New York Slant Signature Tenor Sax mouthpiece. The piece is table stamped a 7, and is one of the best playing Slants we have ever come across. The piece looks incredible as well for being over 50 years old. The piece measures very true as well, sitting right at .105". These New York Slant Sig Tone Edge pieces are incredibly rare, and it is definitely a treat to find one in such good of condition as this.