From the 1934 Conn New Wonder Saxophone publication:
The Eb Alto Saxophone - 6M
The King of the saxophones and most popular of the family. This new model meets all demands of modern engagements. It has plenty of "sock" for the theater, dance or band man but can be throttled down to whisper the sweetest purity for radio type of playing. Power and volume are there when needed, but this power is held under such delicate control that it can cut down to a whisper without losting its character and sweet tonal coloring. This has been accomplished by a scale of unusual accuracy in intonation and uniformity in blowing pressure, and by a mechanism that is positive and precise in its control, fast and light in its response and effortlessness to manipulate. Artists praise particularly the free response of high E and F and accurate tuning of middle and low D. Many exclusive, patented features, use by a host of America's greatest saxophone artists.
Not much has changing in this saxophone since these words were printed in 1934. Although this saxophone dates to mid - late 1933, the New Wonder saxophones have held up over the test of time, providing new generations of saxophonists with the sound, color, and heritage of American craftwork that made Conn saxophones the choice of professionals for decades.