The image on this advert has again re-reverted back from the SunTour Gran-Prix to the SunTour Grand-Prix. It could drive you crazy.

The derailleur names listed on the right hand side of the advert are (from top to bottom):

• SunTour Grand-Prix
• SunTour Competition
• SunTour Competition Twin
• SunTour Skitter
• SunTour Hero
• SunTour Echo
• SunTour Spirt front derailleur.

This is the first mention of the SunTour Competition Twin in one of these adverts.

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• Publisher: New Cycling
• Country: Japan
• Date: October 1966
• Derailleur brands: SunTour
• Derailleurs: SunTour Grand-Prix, SunTour Competition, SunTour Competition Twin, SunTour Skitter, SunTour Hero, SunTour Echo