I own from a long time ago, the original paper (documents of the burned Rapide bought from the dealer Conway Motor Ltd. then used by George to make his drag bike) and the two number plates copies I obtained thanks to a british friend of mine.
I still love the above object of memorabilia, due I 've received it directly from Tony Brown with a signed copy of the Brown's book which was destroied when my house was under a storm in 2005, and a lot of water entered in the lower floor. Luckily the document and the plates were upstair and were saved..