This page appears to show two different Nivex derailleurs. The length of the pulley cage differs between the two, as does the tension pulley arrangement.

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Nivex
• Derailleurs: Nivex course, Nivex cyclotourisme (2nd style)