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Patek Philippe Supercomplication
There are not only wristwatches, but also pocket watches. In particular, this model is considered the most complicated watch in the history of watchmaking. It was commissioned by Henry Graves, a New York banker, in 1927. It is considered the "Mona Lisa" of watchmaking. The house of Geneva took eight years to realize it. It consists of 900 mechanisms and has 24 complications. In 2014 it was auctioned for $24 million.