I have a question about the early Campagnolo Record front derailluer. Were there variations of that particular derailleur beyond a having a slotted cable stop and a closed cable stop? I ask because I have one that appears different, and I cannot determine whether this difference stems from someone changing the parts or it came from the factory this way.
The difference is the following: the screw that goes through the back cage and holds the coiled spring has a flat head screw; the piece in the upper arm that goes into the body is a sotted screw as is the piece where the top of the spring sits. The heads of all three screws appear the same as the head of the screw which goes between the two cages at the end.
All of the screws appear beyond make-shift (that is, they do not appear as something like I would make up and machine). The pieces do indeed appear as if manufactured for this specific application.
For the truly curious, I can supply jpegs.
Chagrin Falls, Ohio