OK, summarizing the discussion to date, 12 hours late due to the time difference, I have the following:
1935 mod.35 - side pull 1939 mod.39 - side pull, "Tenax" model levers, in steel and dural 1948 full rubber hoods on custom bikes. 1950 mod.50 - alloy, side pull, half rubber hoods 1951 mod.51 - alloy, side pull, full rubber hoods 1961 mod.61 - alloy, center pull (Pre 1968) Extra with QR (BREV 453949) mechanism 1968 mod.68 - alloy, side pull 1977 mod.77- center pull 198? mod CX- side pull
Have I missed anything? I look forward Dale receiving photos of the various models for the CR web site in the near future.
Rolf Lunsmann
Still, very, very dry Sydney, Australia