Created by Patek Philippe in 1933 and known as the 'Mona Lisa' or 'Holy Grail' of watches, the Henry Graves Supercomplication is a masterpiece of horology with no fewer than 24 complications. It goes under the hammer at Sotheby's Geneva on 14 November 201

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Created by Patek Philippe in 1933 and known as the 'Mona Lisa' or 'Holy Grail' of watches, the Henry Graves Supercomplication is a masterpiece of horology with no fewer than 24 complications. It goes under the hammer at Sotheby's Geneva on 14 November 201

Created by Patek Philippe in 1933 and known as the 'Mona Lisa' or 'Holy Grail' of watches, the Henry Graves Supercomplication is a masterpiece of horology with no fewer than 24 complications. It goes under the hammer at Sotheby's Geneva on 14 November 2014.