Yup! It’s another intensely forgettable 1950s Campagnolo trademark. This one has a vaguely Dan Brown/Priory of Sion feel to it - so it may hold some deep, mysterious and secretive meaning - or, of course, it may not.

• Publisher: US Patent and Trademark Office
• Inventor: Tullio Campagnolo
• Country: USA
• Date: First use May 1959
• Derailleur brands: Campagnolo
• Derailleurs: nothing specific