Any 100% legal greenbook in Thailand above 400cc is should be registered in Bangkok.
For the moment there is a buyer who is testing it out, if he don't buy it. I will sell my wife's again 100% legal Monster 900 only black (unless she kills me for it) these bikes are awesome. I love it so much I ride my wife's bike every day several miles, they are so light and easy to ride they just beg for it. If I sell my wife's beauty I will have to dig up a new one, which is not that easy.
Should the sale fall bad I will post pictures of the plate and if PM a copy of all the pages in the greenbook.
Anyways over to the question, the bike (s) where actually parallel imported at the same time not from the dealer, but was properly plated and got greenbooks legal you can check in any juristrisction before you decide to buy. I found 2 of these, my wife's matte black one and this yellow one.
Cheers Bard