Originally Posted by
wrk101
I've had lock nuts dated on Campy hubs as old as 1959. Easy enough to remove one and check.
-----
since hubs not OEM their date is moot for dating model year of cycle
originals were Normandy Luxe Competition with gold foil label
---
one interesting thing to check on a 1972 model year PX is the Verot 93 chainset
1972 was the changeover year from "early" to "late" or "Mk.I" to "Mk.II" for this model of chainset. some '72 PX machines received the early and some the late.
this image courtesy of VB illustrates the difference between the two generations. the right arm is early and the left late. the original type 93 was somwwhat prone to radial cracks at the pedal hole so the distal end of the arm was beefed up with extra material in the late type.
the subject cycle's set is early type.
-----