Re:
Looks like a lovely bike! It really comes down to condition, Glen - to respray a frame like this with new chrome will cost you a fortune. Parts for the Super Record components are available but you might spend ages looking for them. On the plus side, if you trade in the Deltas for some proper super record levers and calipers (you really should) you will be left with some change.
If I were buying a bike like this I would expect to be looking to pay somewhere around £1000, if it's in good condition - straight frame, good paint, solid chrome, good bearings, rims etc. If you look on Hilary Stone's website, he has a Masi for sale which is conceptually quite similar, for £1350; I would pay more for the Masi than the Colnago, but bear in mind that the £1350 is a dealer price. If there are significant problems with the paint or the chrome, the price would come down fast - in fact, I would probably look at another one.
Hope that helps! Tony