I've never even ridden tubulars, but I do have some yellow label Fiamme rims that were on a '72 Raleigh International when I got it. I started a thread on the bike, got some great info, and a couple of responders replied that Fiamme tubular rims are excellent (including Sheldon Brown, I believe he said he considered Fiamme's "the best"). I also found out the yellow label Fiamme's are racing rims, the lightest rims available in the early '70's. So yeah, I'd say they're special; whether they're worth much monetarily, though, I have no idea-