The Besson trumpets of the early 20th century were the first truly modern trumpets. The innovations in leadpipe design, bell shape, and wrap (the overall shape of the tubing and instrument) resulted in a far superior instrument to the trumpets of the day. Bach trumpets were inspired (or copied) from early Besson trumpets, and most modern trumpets closely follow the same pattern. Most modern trumpets are in fact close copies or clones of early 20th century Besson instruments.
The BessonBrevete was a very popular choice for generations of Jazz trumpeters, and was played at various times by artists like Miles Davis, Rafael Mendez (the Olds Mendez was basically a copy of his old Brevete), Lee Morgan, and Fats Navarro.
The BessonMeha was also a very popular choice, being a brighter horn more suitable for lead and big band playing, played by the famous Conrad Gozzo and others.
PS If I may, a personal note. My best friend in elementary school was a Marc Besson. He came for the Massif Central region. I don't remember much about him -it must be about 70 years since I last saw him. But there is one thing I remember clearly, he referred to his shoes as "mes camemberts."