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DavidTo show that picking up a kid's crayon to make a counterfeit is not pure goofiness: In the British Museum, London, there hung for over 100 years a famous engraving. After suspicions arose, they did tests. It turned out a counterfeiter made a copy way back when by making a sketch with a pen. It took great skill because of the details of the origina etching and, because of a technical reason not worth going into, he had to draw the whole thing backwards.