Thanks to a former list member I think I was mistaken in my assumption about the derailleur. I now think what I have here is not a T de F at all, but a Juy 51 which was around in the early 50s. The problem I have is that it was given to me as a box of parts, and I don't really know for sure what it, if it is all there, or how to assemble it. It seems to be very similar to a Benelux Mk12 which I have, in that the second cable controls the tension, but I am still not sure how it should be assembled. Any help will be greatly appreciated.
Peter Brown, Lincolnshire, England