These derailers turn up on ebay from time to time. Here's the URL to my posting last time around:
http://search.bikelist.org/
David Benson, Auckland, NZ
Roy H. Drinkwater wrote:
> Bob Freitas asked:
>
>> Is this not that MTB rear der that keeps popping up?
>> http://ebay.com/
>
>
> and Kurt Sperry responded:
>
>> As I recall the last time this derailleur (or one like it) was
>> discussed here the consensus was that it was in fact an early MTB
>> mech, but I still wonder. I seem to recall the original Campagnolo
>> MTB gruppo, Euclid I believe, had a more modern-type mech without the
>> NR-SR style lower pivot casting. Of course relying on memory can be
>> trachorous- particularly mine- so I am sure I have an original ad for
>> the Euclid gruppo as it was introduced in one of my old cycling mags
>> and will check if it will help resolve the issue.
>
>
>
> Taking a look at
> http://www.andysbikes.com/
> Euclid. Nor is it a Record, Olympus, or Centaur (1st generation).
> Could be a Icarus or Themis, but there's no pictures to compare to.
>
>
> Roy "is this in the CR time guideline?" Drinkwater
> Lititz, "I don't think so" PA