Selling a decal-less '73-ish Gitane TdF I had bought for $75 - had high-flange Nuovo Record hubs with tied and soldered spokes, and it was FAST, but I was pursuing PX-10s. That was a great bike ath handled well, and I shoulda kept it. What a maroon ...

Selling a c.1958 Raleigh Lenton Gran Prix that was box stock - the ONLY change was a replaced inner tube.

Biggest regret - selling the 531-tubed Raleigh that was probably an early Competition or not so documented Gran Sport. Had traces of lagoon blue and white under the many layers of housepaint and rattlecan blue, black and green. Nervex Pro lugs, relatively plain box crown, Huret tips and dropouts, no chrome, some minor dents - but it was free, plucked from a trash heap by the side of the road, and JUST my size. It even came with a set of Stronglight 93 cranks with a 42T ring someone had drilled. I built it up as a single speed, then it was a 10-speed, then a 14-speed, then a fixed-gear ... it was the perfect mad scientist experimental platform, it rode well, it handled bigger tires, it was stealthy, and it was just a great bike. Alas, in an ill-advised drive to simplify my life by reducing what I own, I sold it via ebay to some guy in Canada. I still miss that bike ...