Well, I fell for it. Got the stupid certificate but no answers to my questions (what is the tubing and was it a Collstrop team frame), and not even a reply to the last email I sent. Stardue (whoever they are but apparently owners of Bassobikes) claims I have a 1989 Loto but I don't buy that: no SLX tubing, no internal cable routing and likely a different serial number format (A268). "We'll check our archives thoroughly", ha! Still a nice ride though, nothing like my Viper at all however.