Tantalizingly, the study indicated that additional digital processing methods could capture bleed through of ink from the other side of the page and even indentations left by a pen nib.

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184 x 165 cm. (72.4 x 65 in.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

The recent discovery of an art forger's workshop reminds us of the long history of fraudulent artworks – here are the simple rules to work them out.