Patek Philippe · Nautilus
Nautilus
Ref. 5711/1A-010
Component compatibility
What this reference is documented to have carried, and in what capacity. A service part is the manufacturer's own work; only a counterfeit classification is a finding against the watch.
Documented calibers
Whole production
Visible through the display back, which makes the movement unusually accessible evidence on this reference. Expect a 21k gold rotor and a free-sprung Gyromax balance with no regulator index.
Components
Whole production
Check under raking light. A printed imitation of the horizontal relief is visible in seconds and rules out a whole class of counterfeit.
Whole production
Whole production
Among the most counterfeited watches in existence. Examine the bezel chamfer and the brushed-to-polished transitions before anything else — that is where the cost of faking it lies.