what does it mean when your VIN doesn't exist?

[Janit]

My impression in that car donations tend to go through clearing-house centers, so it's possible that the bureaucracy will still choke on the lack of a carfax verification even with the valid old.mbclub.ru database entry.

You may have better luck with a local junkyard dealer who has actual hands-on experience with real cars -- he might even pay you something for the car.