The New Adventures of Batman brought the Dynamic Duo back onto America’s TV screens in 1977 - and spawned a plague of spurious adverts like as this one.

The blurb maintains that both of these alluring bikes are equipped with SunTour gears - but the red one looks to me to be suffering from a bad case of Shimano Positron-itis.

• Publisher: Bicycling
• Country: USA
• Date: 1977
• Derailleur brands: Vista, Shimano, SunTour
• Derailleurs: Vista V GT Luxe?, some kind of Shimano Positron