More Campag help ident please

proto

I bought this rear mech in September 1992, pretty sure it's a Record 8sp, but someone has told me it's a Chorus. Anyone able to confirm one way or another? Fitted to my old faithful Vitus which is being pressed into service as a winter bike, it just doesn't seem right to let winter riding wreck it, and I'll ake the opportunity to upgarde to 10sp.

Mr Sallnow?