Exclusive mass-production rights were given to the Selmer company, although only 13,000 were made.
The reason: It is the first to offer realistically practical advantages for ever clarinetist.
To the professional, the Mazzeo system Selmer clarinets offer increased technical fluency, improved tonal balance, more accurate intonation, and the possibility of flawless performance of passages formerly considered hopelessly awkward....To the student who from the beginning uses the Mazzeo system will benefit by more rapid development of correct embouchure and hand positions, and complete elimination of traditional clarinet throat register problems.
[3] Many are now in museums, but some are in private collections or can be found for sale.
In addition to the instruments made in France, Selmer's "Bundy" and "Signet" lines of student instruments (made in the U.S.) each included a Mazzeo model.