I have had a few, the best score was these two, 1974's Raleigh Pro and Schwinn Paramount P10
They were bestowed on me from a friend of my Brothers
tuna These bikes were her uncles and he had passed away. so these two were given to us as they were cleaning out the uncles storage.
The other score as some may know about a 1988 Centurion Ironman made by Zunow for Mike Pigg and the 1988 Tri Season. the components had been changed except the Dura Ace Headset and Bottom Bracket

Paid $175 for the bike.