Alex Ruger, director of the Van Gogh Museum in Amsterdam, at the unveiling Monday of Vincent Van Gogh's Sunset at Montmajour.
Olaf Kraak /AFP/Getty Images
September 9, 2013 Sunset at Montmajour was painted in 1888. Because it was unsigned, researchers had doubted its authenticity. But now, thanks to closer examinations of the canvas, brush strokes and letters that Van Gogh wrote, experts are convinced it's the real thing.
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