This Holdsworth advert from October 1967 features an image of the very first version of the Campagnolo Nuovo Record derailleur. Some features for true Campagnolo-geeks to note include:
- Pulley wheels with nine long 'teeth'. Later versions have pulley wheels with ten much shorter 'teeth'.
- A random pattern of dots surrounding the writing on the logo on the outer parallelogram plate. Later versions have a regular grid of dots.
- The absence of the usual slot that traps the pulley cage spring in the bottom of the p-knuckle. In these early versions the spring was trapped by a slot on the parallelogram side of the p-knuckle.
- The absence of the usual pin that restricts the rotation of the pulley cage, instead, the pulley cage is prevented from rotating too far by a ledge cut in the splined cylinder that rotates around the p-knuckle.
Many thanks to Andy Fraser for lending me this magazine and allowing me to scan it.