I would guesse that your hubs (if original to the C-record Grouppo) are 7-speed freewheel hubs, not the 8-speed casette hubs which would have been standard on a 1992 era top of the line bike. You might want to remove the wheel and check to see what the rear dropout spacing of the frame is. A 1992 frame would have 130mm spacing, in which case a 126mm hub is probably compressing the dropouts together. Simple solution is to add a spacer to left side of the hub and re-dish the wheel. This will make the rear wheel easier to install/remove and will keep the dropouts aligned properly so that there is less stress on the axel. Re-dishing the R wheel will make it slightly stronger due to move even spoke tension side-to-side.
The brake calipers might have been cobaltos that have lost their jewels? Hard to tell from the pictures. Close ups of the brakes might be able to differentiate between cobalto or other campy brake models. The rear brake looks like it was "fixed" with hardware store fasteners, definilty could use a more attractive replacement nuts.