Original wheels, Campy hubs, no locknuts, QR. (Do you think the hubs are Record? The rear derailleur says Nuovo Record, the front derailleur is Campy too). It looks like the tires were replaced b/c there is a "Schwinn" tire on the front and a Kenda on the back.
The stem is 3ttt.
Patent date on the rear derailleur is 73.
And one of the first things I noticed was the extra long horizontal dropouts. I immediately thought, fixed gear conversion! But then changed my mind when I noticed the quality parts.
I think I may turn it into a project to make it full Campy (from the time period). Def get rid of the 27"s and get 700c's and relace the hubs. With a brown Brooks, it would be complete.