I have been searching the Campagnolo catalogs for Campagnolo seat post quick releases. I have two different types. The one I had thought earlier has a nut on it that echoes the early axle quick release nuts with what looks like bell shaped helmet with a ring in it. The one I took for later has a much plainer flatter ring shaped nut with knurling on the edge. Both have curved blade handles.
Now looking through the catalogs the first mention of them I seem to see is in 1967 and the one I thought later is it! The '67 one has a curved handle while the '67 axle QRs have straight handles.did the seat post QRs always have curved handles?
Now I am more than a bit confused about them. Might anyone know a bit about them and their time line? Were there only two styles?