The main number sequence starts with the first frame I built in 1976, 001. It continues through to 11553, a Condor, the last frame I built at Steel's in 2005. There were a couple of subsidiary sequences over the years, about 20 to 30 of the first 753's had a number starting DY753. All the Flying Scot frames we made for Dales in Glasgow were prefixed FS and I seem to remember some touring frames had the prefix MS. All the Condor frames had their own number stamped on the bb but were logged in our system under our number. I still have the original order books apart from a few pages missing from the first one although I do remember the first one I made at the workshop in East Howdon was 072. Given a number I can give date ordered, date invoiced, type, tube and size. We lost most of the original order forms in a flood just as we were moving out of the Wallsend workshop in 2005. I reckon that, including all the frames made here in the last 18 years I have made, persoally, about 4000 and been responsible for around 15000 all told.