Patek Philippe “Hour Glass” Dress Watch ref. 2456J in 18k yellow goldThis Patek Philippe Hour Glass Ref. 2456 was introduced in 1949 and features a dramatic, ergonomic silhouette defined by its distinctive concave and convex case sides. Measuring 40 mm (including the lugs) by 21 mm, the case offers a bold, avant garde architectural design with a presence that remains striking even by today's standards. Adding to its charm is the engraved case back, bearing the initials H. R. K. a personal touch that lends the watch an