Cvairwerks wrote:
First thing that I would do is order the FAA file on the aircraft. Assuming a good file and the a/c hasn't been destroyed on paper, then talk to a DAR that is versed in warbirds. I would do it all before making the purchase, or make it contingent on being able to clean up the paperwork and make it legal.
This is very good advice. I would add is there an official heir to de-Havilland that might be able to issue you a replacement data plate? They would probably want ensure the same things Cvairwerks has mentioned. I understand that some British aircraft have the serial or construction number mounted on a plate on the main spar or center section. If true that ought to establish the true identity of the airframe.