The black keyed washer used to fit Huret DuoPar, Success and Challenger derailleurs to Campy style dropouts have always been hard to find. Huret made an adapter that works with some of their derailleurs made for Huret only dropouts. I suspect that these are even more rare!
Here's a picture of the beast.
A few weeks ago I found 50-100 of the silver keyed washers for Huret dropouts at a LBS. I bet somewhere that there are the same kinds of caches of the black ones.
Chas. Colerich Oakland, CA USA
Patrick Doody wrote:
> Anybody have a Keyed Washer(or a trashed deraileur) for campy style dropouts
> for a Huret Duo par? It's rumored that the washers for the Huret Challenger
> or Success are interchangeable. so if you have a spare keyed washer or
> trashed derailleur please contact me. Thank you!
>
> -Patrick Doody
> St. Paul, MN