Vintage French Bertin C-37 Racing 12 Speed Road Bike from my best estimate 1981. Andre Bertin was an early French Racer turned manufacturer / entrepreneur. The C-37 was Bertin’s Top of the line bicycle the early ones were made of Reynolds 531 Steel tubing and the 1980s were made of Super Vitus steel tubes and adorned with the finest parts. This one has Sweet Gold Simplex Super LJ Dérailleurs and Mafac 2000 Brakes.