Some may find that link below amusing. It reminds me of the story of the first German stamp. It is so expensive that it has attracted fakers. One of them (I forgot the name) became famous for being so good that he nearly lost his life for being too good. He crossed a European border during the last war with some of his faked stamps in a briefcase. The Nazis captured him with the faked stamps. Smuggling money (or valuables) had the death penalty on it. Faking stamps had a minor penalty (compared to death). So he quickly told them the stamps were fakes. But an expert on this stamp declared his fakes to be genuine. Now he was in real trouble and he offered the Nazis to fake the stamps under their eyes. Only when he did this his life was spared. His fakes are now so famous that they sell for about half of the price of the real stamp, but only if an expert has the stamp declared to be a genuine fake by that famous faker and not by a lesser quality faker.

Wolfgang

Relative Fakes Hitler Diary Forger's Name on Paintings

Buying a fake of the Mona Lisa is fair enough, it's a great painting, hangs in the Louvre and isn't for sale. But buying a fake of a fake? Unwitting buyers have been shelling out thousands for faked forgeries of Mona and other classics, apparently thanks to fraud by the great-niece of the man who forged the Hitler diaries.