A charm-free Taiwanese copy of a mid-range late-1970s Shimano derailleur (500GS perhaps?). I have no real idea of the date of this model, but have an abiding memory of its charmlessness.

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1. •Brand: Lepper, manufactured by SunRace
   

2. •Country: Taiwan
   

3. •Date of introduction: 1995?
   

4. •Date of this example: unknown
   

5. •Model no: unknown
   

6. •Weight: 273g excluding the missing cable clamp washer
   

7. •Maximum cog: 34 teeth?
   

8. •Total capacity: 34 teeth?
   

9. •Pulley centre to centre: 75mm
   

10. •Index compatibility: friction
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

13. •Pivots: two sprung pivots
    

14. •Material: largely steel with an aluminium rear knuckle
    

0398/N