Conn Standard Steelay Number 3 Alto Saxophone Mouthpiece

The 1935, November 1937, March 1938 and 1939 Conn catalogs and the 1956 accessories catalog have description of Steelay mouthpieces. Conn's introductory description in the 1938 catalog reads as follows: "For acoustically perfect musical results, sweet tonal coloring, and fine intonation, the CONN STEELAY reed mouthpieces are the choice of the finest artists. They are hand-cut and hand-finished by experts in the Conn plant, from STEELAY! A recently developed fine texture rubber which is almost as free from shrinking and warping as steel, and can be cut and shaped with fine accuracy, takes a high "black glass" finish, and has necessary acoustical properties for rich tonal qualities. That is STEELAY as developed by CONN".

Continues:
The Standard Steelay tone chamber and throat follow the tradition of the Conn mouthpiece, being large and full for robust tone. This is the "standard" chamber and throat, developed over a period of years especially for Conn instruments. Important refinements, however, have been incorporated in this new line, especially in the alto and tenor saxophone and the soprano clarinet mouthpieces. Ample thickness at the tip and on the sidewalls guard against warping and shrinking. Inside carefully hand-finished. Lay accurately put on by hand and given "gun-metal" finish. Choice of the six lays [...] to meet a wide range of requirements. Outside polished to a high "black-glass" lustre. Each mouthpiece minutely inspected and individually packed in attractive box. this is an excellent mouthpiece , built for fine artists. Furnished as standard equipment with every new Conn instrument, and in big demand as special mouthpiece for all makes of saxophones and clarinets."