It is brighter with more power and has a larger chamber to make a larger tone. The beak is also lower so it's very easy to play.
This is a new model and is only available here. The item "Fred Lebayle Metal Studio III 7 Alto Saxophone Mouthpiece Sax RARE 2017 Model" is in sale since Wednesday, November 01, 2017. This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Band & Orchestral\Saxophones". The seller is "landrusax" and is located in Brooklyn, New York.This item can be shipped worldwide.