I have a set of Campagnolo shift levers that are from the mid-70s. They say Patent Campagnolo Vicenza Italy. The alloy shift levers themselves are okay condition, but the hardware has some rust and grime. Metal bushings/washers. Interestingly, these are for braze-on, but have the chromed steel shifter stops with cable guides. John Barron has a site with pictures. I identified the model as the ones that have this caption: "This Campagnolo shifter is from about 1970. Note the "Closed C" which came after the "Open C". It has chromed backing plates- earlier versions had black backing plates. It also has cable guides which were eliminated in the late 70'."
Here's the link to the "Shifters" section of John's gallery:
http://www.velostuf.com/