I have owned at least 2 NOS old steel Campy Record rear ders that had plastic pulley wheels. I've also owned NOS Record rears with steel wheels.
Can others tell me whether they know, or believe that the later runs of steel Record rear ders came with plastic pulley wheels? (Earlier ones of that model "for sure" came with steel wheels).
As we know, it's plausible that the first/original owners of the NOS Record rears that I had changed out the steel wheels for the space-age plastic ones...
John Barron
Minneapolis