Patek Philippe Aquanaut 5167/1A-001

The Aquanaut features a rounded octagonal case designed inspired by the Nautilus. It is also a diver's watch with the theme of "sport elegance." This particular piece is an extra-large model introduced in 2009 with a 40mm case size. This is a 6mm increase in size over the medium's usual 34mm, but in today's world where 40mm to 42mm is the norm, it is probably just the right size. Year Circa 2017 Model Name Aquanaut Reference No 5167/1A-001 Case No 7033***/6154*** Calibre Manual Cal.324 S C Material Stainless steel Bracelet/Strap Patek Philippe stainless steel bracelet Clasp/Buckle Patek Philippe Stainless steel clasp Box Yes Papers Yes Size Max length180mm Case diameter40mm Accessories Accompanied by Patek Philippe Certificate of Origin dated April 11, 2017 and box.