1899 Luger

I am not sure this belong here or in Early Luger. A dealer tells me he knows where a 1899 Swiss test luger is located. He said is not in real good shape and that the price is around $6,000. I assume this may be one of the about 100 that were made for the Swiss army to test.. What is a proper price and how can one tell if it is faked. I know these are difficult questions. Any input would be appreciated.