I thought this was interesting. Somehow it got into my old bike parts box and I ran across it again the other day. No model number or other identifying printing, other than the Campy name/logo in about three different places.

Would this work on a '70s vintage 10-speed, say mated up with a Suntour V-Tluxe?

It should do fine. That's one of Campagnolo's lower-level models, but I think the differences are more in looks and weight than with performance.

It isn't the '70s Valentino reissue. This is the '60s Gran Sport front derailer - vertical-mount fixing bolt on the cage, with better plating.

Good stuff - they work quite well, all things considered.

-Kurt

I agree with Kurt, it is a GS, anywhere from 51-63(?). We could probably narrow down the year with better pictures.

I don't know how big a difference there can be between the big and small ring for this derailleur to work. For non-touring bikes back in the day, it was typically only a 2 or 3 cog difference.

I'm presently running a 43/51 combo (that is what you do when you don't have spare 42 & 52t rings) on the '61 Paramount with this FD. No problem whatsoever - works beautifully, and requires hardly any effort at all.

Come to think of it, Campagnolo was having problems a year ago developing a battery-operated shifting setup because of the power required to shove the FD upwards - I dare say a modernized variant on the rod mechanism would easily solve that problem.

-Kurt