My rough translations of the photo captions, clockwise from top left are:

• Mark 7
• -
• Mark 8

I think that more complete labels might be:

• Cyclo Benelux Mark 7
• Cyclo Benelux
• Cyclo Benelux Mark 8 Tourist

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Cyclo Gear Company
• Derailleurs: Cyclo Benelux, Cyclo Benelux Mark 7, Cyclo Benelux Mark 8 Tourist