Bertin/Nervex Numbers on BB Shell. Help Decipher.
 

I am in the midst of restoring my Bertin and after sanding the bottom of the BB shell I noticed some numbers. I could faintly see these with paint on them but now you can easily see them. At first I thought it was the Nervex numbers but could it be Bertin info too? Anyone care to help decipher them?

Cheers,

GG

http://farm8.staticflickr.com/7139/6...3ffa9dce_b.jpg

Lug angles; you'll find them stamped on Nervex BB shells. Irrelevant to the maker.

-Kurt

Thanks Kurt, I was hoping for more Bertin info.

Cheers,

GG

GG -

Is your BB shell trying to grow sideburns? What is that?

Jesse

Aerodynamics

It's a French Ref 3103 BB shell. Angle B=59°30', Angle C=64°, Bore A2 Chainstays O.D.=22mm, Dimension E (chainstays centerline distance)=38mm, down tube and seat tube 28mm O.D.

http://i32.photobucket.com/albums/d7...8Nervexp11.jpg

Sorry, that's my department:

http://farm8.staticflickr.com/7258/6...d8b1f2cf_c.jpg

-Kurt

Well just for reference I was confused the first time I saw Nervex numbers and thought they where serial or model numbers. But ounce you learn to decipher them they can tell almost anything about a older frame high end frame.

This is from 64 Gitane with 531 tubing I sold cheap don't ask.

http://i1211.photobucket.com/albums/...3/DSC00524.jpg

^
For being able to tell "almost anything" about an older frame, your Gitane's Nervex BB shell doesn't say anything on it to distinguish it from the Bertin. The shell is stamped with the exact same angles.

-Kurt

Bertin usually stamped a frame number on the non drive side dropout face.
As a code they are not useful.