For Sale: Reynolds 531 lugged TT frame (23")

I took a bike to Roberts and Chas no less looked at the frame...now this frame is not top notch...but he said there is no way of telling what tube is present....he said the key things to look for if it is 531 db or SL or competition etc....the shape of the chainstays..good 531 if oval...and the quality of the work around the seat cluster...but if Chas Roberts says it can't be done with any great degree of confidence ...who am i to argue!...You can look on the internet at weight weenies or velobase or classic lightweights...or email Hilary Stone...hope that helps.

that does help actually - pretty much what I figured, and good to know about certain signs of frame quality (mine has ovalised stays, for instance), and the lugs are pretty nice though not quite of the fancy variety.

I'll check out the other sources as suggested, ta!