1926—Paris, France
Courtois pictures, in its catalog, 4 different trombones: trombone alto in e-flat, trombone tenor “Modele Conservatoire,” trombone tenor and bass “Modele Conservatoire,” and trombone contrabass (see below image; public domain).
Courtois pictures, in its catalog, 4 different trombones: trombone alto in e-flat, trombone tenor “Modele Conservatoire,” trombone tenor and bass “Modele Conservatoire,” and trombone contrabass (see below image; public domain).