 An ardent watch collector, Graves was a patron of Patek Philippe, competing with James Ward Packard, the automobile manufacturer, for ownership of the most complicated watch in the world.In 1927 Packard commissioned a complicated watch but, not to be outdone, Graves surpassed his rival in 1933 to become the owner of the most complicated watch ever made.It was called Patek Philippe Henry Graves Supercomplication.