Hi, Dubbann-

The example bike from your embedded link is probably a C 70 despite the paint and decal similarity to your own bike. Yours definitely seems to be from the early 1970s but I believe it is a Bertin C 31 with Durifort frame and forks. The fork rake seen in your personal bike's photo is not original. At some point, the fork has been bent, probably by an extreme jump or by wheelies. The top tube should be absolutely level and yours is not. It is absolutely essential for safety that you have a bike shop or framebuilder check the fork - I believe you will find it damaged at the crown/steerer tube joint.

Typically, a C 31 would have more fork rake than a C 34 or C 70 because it was a sport touring type bike but this example is well beyond any catalogue or real world photos I have ever seen. Currently, in damaged condition, it would be premature to consider its value.

bertinjim