Originally Posted by
nlerner
I'd guess early 1970s given the lack of water bottle mounts and downtube shifter mounts. I have an 80s Bertin, which has both. Also, looks like yours has a replacement fork given the eyelets on the rear dropouts but none on the fork.
I would also say early 70's based on the lack of brazeons and the metalic lime green paint color. As siad the fork looks like nicer replacement fork and not original the few 70's Betins I have seen had fork crowns similar to the frame matching paint and chrome socks.