You don't see many of those. When I was a teenager riding my Helyett track bike in the mid-'60s, there was another local teenager I rode with a lot. He had a Roold (either Vitus or Durifort tubing; can't remember). Then he showed up one day with a 531 Oscar Egg.

I have a vivid memory of drafting behind him and his Roold, accidentally overlapping his rear wheel, and caroming off the road and into a flat, desolate field whose only nearby feature was a telephone pole that I managed to slam into. That hurt.