I have a blue single speed Raleigh Bomber ( 1978 model i think). It has all its origional parts, but at some point its had the rear wheel removed and the retaining nuts are missing. Could anyone tell me what threads are on the wheel spindles as they appear very fine, and where I could get some replacement nuts? I would also appreciate any advice as to the bikes current value. There are a few small areas of paint peeling off the frame, but generally the condition is good.