Nice colors & lots of shiny bits & pieces!

Quote Originally Posted by Normski View Post
It is somehow "semi legal".
That is true, if it stays off the road (i.e., a collector).

Quote Originally Posted by Normski View Post
... the bike can be registered in severel countries without problems
I can only speak for Canada, where the bike must be "all original" to be classified as a vintage bike (for purposes of importation and registration).

Quote Originally Posted by Normski View Post
However, apparently there is a rule, that previous legally registered bikes with expired plates have to renew their registration; they can't be confiscated but can only be reminded to renew the registration (even the bike is older than ten years). This is the" gap" I'm using.
Actually, the "rule" is that an expired plate cannot be driven on the road, and could be confiscated (if you are stopped by the wrong policeman at the wrong time). When my A-plated Chang expired in 2008 (along with all the others), I spent a lot of time researching this rule back then (like most, it was a 97 registration). My ONLY option was to scrap the bike, and get the permit to place the A plate on a brand new sidecar. And the A plate could not be moved from a 3-wheel to a 2-wheel bike.

Quote Originally Posted by Normski View Post
I live downtown Beijing, and everytime I want to buy gas for example, I have to show them the (expired) registration to get gasoline here, it always works, I never faced any problem. The same is with the police, because the rules are quite "flexible" when it comes to bikes like this. This gives me more space within the legal law without breaking it..
The gas stations are angry that they have been put into an "enforcement" role, and will offer gas if they believe they can subsequently say to the police "well, we saw a blue book."

The rules aren't "flexible", but the police can exercise "discretion" (e.g., it is too much of a pain the a$$ to deal with a foreigner).

Anyways, good luck with the sale ... shiny & pretty.