The Contrabass sarrusophone is the deepest of the family of sarrusophones, and was made in three sizes. The EE♭ version was the only sarrusophone that was ever mass-produced in the United States. It was made by companies such as Gautrot, Couesnon, Romeo Orsi, Rampone (and Cazzani), Buffet Crampon (Evette and Schaeffer), and C.G. Conn. (source)