DISRAELI DOCUMENTS
see also French Patent # 785,035 - Super Leader 1935
see also French Patent # 785,035 - Super Leader 1935
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 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 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 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.