[CR]Wanted: Campy front derailleur

I'm looking for a good or better Campy clamp-on front derailleur from the early to mid-1970s. That is, one new enough to have the circlip on the upper pivot arm, but old enough not to have the CPSC lip.

Have some pretty ugly pre-circlip, post-cable housing stop versions could trade....

thanks
harvey sachs
mcLean va