DISRAELI DOCUMENTS
see also French Patent # 785,035 - Super-Leader 1935
see also French Patent # 785,035 - Super-Leader 1935
see also L'Officiel A.C.M. 19/05/1935 - Changement de vitesses de cycles
see also L'Officiel A.C.M. 19/05/1935 - Changement de vitesses de cycles
see also L'Officiel A.C.M. 19/05/1935 - Super-Leader ad
see also L'Officiel A.C.M. 19/05/1935 - Super-Leader ad
see also L'Officiel A.C.M. 04/04/1937 - Super-Leader ad
see also L'Officiel A.C.M. 04/04/1937 - Super-Leader ad
see also French Patent # 873,720 - Super-Leader 1941
see also French Patent # 873,720 - Super-Leader 1941
see also French Patent # 886,238 - Super-Leader 1942
see also French Patent # 886,238 - Super-Leader 1942
see also French Patent # 935,346 - Super-Leader 1946
see also French Patent # 935,346 - Super-Leader 1946
see also L'Officiel A.C.M. 16/04/1949 - Super-Leader ad
see also L'Officiel A.C.M. 16/04/1949 - Super-Leader ad
see also French Patent # 1,017,448 - Super-Leader 1950
see also French Patent # 1,017,448 - Super-Leader 1950
see also French Patent # 1,017,449 - Super-Leader 1950
see also French Patent # 1,017,449 - Super-Leader 1950
see also L'Officiel A.C.M. 23/09/1950 - Super-Leader ad
see also L'Officiel A.C.M. 23/09/1950 - Super-Leader ad
see also Le Cycle 10/1950 - image of Super-Leader Compétition
see also Le Cycle 10/1950 - image of Super-Leader Compétition
Super-Leader Compétition Avis très Important 1950?
Super-Leader Compétition Avis très Important 1950?
see also L'Officiel A.C.M. 01/01/1951 - Notes et Croquis du Salon 1951
see also L'Officiel A.C.M. 01/01/1951 - Notes et Croquis du Salon 1951
see also L'Officiel A.C.M. 16/06/1951 - Super-Leader ad
see also L'Officiel A.C.M. 16/06/1951 - Super-Leader ad
see also Cyclo - Origine du dérailleur 1959
see also Cyclo - Origine du dérailleur 1959
Super-Leader was the brand of Établissement Charles Gautherot, based in Dijon, France.
I know of three basic Super-Leader derailleur models:
All three have fairly basic underlying designs, but are notably well finished and constructed.