This period saw a rapid development in the Bertin line of quality road bikes. Vitus remained a supplier for Durifort but Reynolds 531 became more common in the C 35 and C 37 lines. From the early to the late 60s forged ends with derailleur hangers became universal across the quality product line. Braze ons elaborated especially for the Cyclotouriste line for Bertin never seemed to universally embrace the 60s passion for clipping things to the frame.
An early 60s Bertin of unknown type built with Reynolds A tubing, the predessor of 531.
An early 60s to mid-60s C 37 with stamped dropouts offered for sale on the Toronto Kijiji in September, 2009.
This Bertin C 34 photo comes from a French bulletin board in April, 2009.
This Campagnolo Nouvo Record equiped Bertin C 35 dates from the early to later part of the 1960s. Further details can be found here .
This is an early 60s C 37 in a full Reynolds 531 frameset found on Ebay.
Detail of the C 37 above.
This Bertin C 31 was a late 60s production item.
An early to mid-60s C 31 Cyclotouriste found on Ebay in April 2009.
This Bertin C 35 is a mid to late 60s example located on the Ride Vintage Steel site.
An early C 117 minus touring accessories. Note the long cage Simplex Prestige touring derailleur.
The above photo shows an early C 37 formerly owned by Mike from New Zealand.
A 60s period C 37 with full 531, Nervex lugs and Simplex Tour de France rear derailleur.
This bicycle was for sale on Ebay in January of 2010. It seems to be a late 60s Bertin C 117 mixte with a Durifort frameset and very nice detailing right down to the white pinstripes on frame and fork.
Details of the Bertin C 117 shown above.
This 60s Bertin C 28 was pointed out by Tim M. from Virginia. Note the French tri-colour bands on the seat tube and the atypical lettering font on the seat and down tubes labels.
Updated January 10, 2010.