David Bilenkey wrote:
>
> On the rear derailleurs there was PATENT XX where XX is the year 19XX...
> up until when? Then the numbering system changed, correct? How did it
> work exactly?
>
> On the hubs, under or on the locknuts, again it was CAMP XX where XX is
> the year 19XX, but finding an 11 on a locknut? Or is this 77?
Nothing definitive here, but it is pretty much agreed upon that the "11" signifies that the part was originally for warrantly replacements.
Chuck Schmidt
South Pasadena, California
http://www.velo-retro.com (Campagnolo Timeline)