- Derailleur brands: Ludoal possibly manufactured by Gambato
- Country: Argentina
- Date of introduction: 1967?
- Date of this example: unknown
- Model no.: unknown
- Weight: 290g
- Maximum cog: 32 teeth (Campagnolo’s unlikely figure for the Gran Sport)
- Total capacity: 26 teeth
- Pulley centre to centre: 44mm
- Index compatibility: friction
- Chain width: 3/32”
- Logic: top normal
- B pivot: unsprung
- P pivot: sprung
- Materials: largely bronze, with steel parallelogram plates
