I have recently picked up a front hub axle that says campagnolo and has the radiating world logo on it. The lock nuts and cones on the axle are all dated 1958, but I can't be sure they are original to the axle. My question therefore is: when did Campagnolo start marking their axles? It seems most of my axles from the 50's have no marking on them and the more recent ones all simply had the Campagnolo name. Can anyone comment on the chronology of the axle markings?