Created by Patek Philippe in 1933 and known as the Mona Lisa 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 11 November 2014.

Created by Patek Philippe in 1933 and known as the Mona Lisa 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 11 November 2014.