This is a very unusual version of a Patek Philippe Ellipse referred to as a reference 3580. Its big cushion case design with brushed enlarged bezel is very impressive on the wrist. The hidden back wind crown enhances the sleek design of the case. The original starburst blue dial with applied thin baton markers and center sweep seconds is pristine. This watch is powered by a caliber 350 automatic movement. . The condition of this watch is mint and comes on a brand new Patek Philippe black crocs strap.