This 1989 advert is the earliest evidence that I have seem for FiR derailleurs. It describes four groupsets, two for road and two for mountain bikes.

• Publisher: Bicisport
• Country: Italy
• Date: April 1989
• Derailleur brands: FiR, manufactured by DNP
• Derailleurs: FiR Gemini, FiR Apollo, FiR Nettuno ? possibly in two colour options