Originally Posted by CV-6
So what I have probably is a Record crank from around 1991 with rings from a later year. I generically lump the later Campy Record as C-Record. My bad on that.
For the most part the original C-Record design for the crank arms, front derailleur, front hub and seatpost last from 1984 to 1994 so I would say you are safe saying your 1991 cranks are C-Record.