Originally Posted by
Narhay
Shimano Lark. Some of them were part of the Centeron shifting thing.
The big hint was that last photo

I know but my old eyes did not look so good. Thought it read Five Speed (I know, I know, I know - sheesse). Sorry to waste other's time, even on a lark. Now I gotta find a Gian Robert rear derailleur or say to heck with restoration (after all, I just finished restoring another Torpado with a Campy tranny).