“The technical department had known that the original had been replaced by a copy since May 2014, when book restorers discovered it by accident during a program to preserve old books from acid-deterioration called IFADU. But despite this discovery, in these four intervening years, the forged copy of Sidereus Nuncius left by the thief continued to appear in the library’s catalog as the original.” – El País (Spain) (in English)
