Most cyclists know that square decal on the seat tube that says:guaranteed built with Reynolds 531 is an indication that the bike is of higher quality frame construction. I came across this link to the Reynolds decal timeline through a CR ( classic rendezvous) list member today and thought it was worth sharing. Might be a bit dry for some, but I find it interesting. Enjoy!
http://www.hlloydcycles.com/531%20history.pdf
