try to get a "COC" that's the "Certificate Of Confirmation" this is the first paper that is issued by KTM or any manufacturer to the first dealer of any vehicle..
The COC is the original issued paper that comes together with the bike to be able for any one, or in most cases the dealer to be able to do the initial first registration at any registration office world wide, to be able to get the national registration papers issued for the owner of the vehicle.
Well you are saying you have the original first invoice... try to contact the dealer and ask if he may still has a copy or of the COC of your bike....
Now... if not... ask him to send you copy of a similar 660... (DTP is grate, only need changing the VIN-no. a tiny bit, matching your bike and invoice) worked for me.. a few years ago...
Last edited by spooky; 17 Aug 2010 at 14:49.