A fake Patek Philippe Nautilus 5711/1G is a replica of a white gold Nautilus that Patek Philippe retired in 2021. The genuine watch has a solid 18k white gold case and bracelet, a blue dial with horizontal embossing, and an in-house self-winding movement. Replicas miss on three things above all: metal weight, movement finish, and dial texture. Boxes, papers, and hang tags are far easier to fake than any of those.
What the 5711/1G Actually Is
The 5711/1G is the white gold member of the Nautilus 5711 family, the model Gerald Genta designed in 1976 with a porthole bezel and an integrated bracelet. The case measures 40 mm across and about 8.3 mm thick. The dial is blue with horizontal relief embossing and applied gold hour markers. Power comes from a Patek in-house automatic caliber, the 324 S C on earlier examples and the 26-330 S C from 2019 onward. White gold is not rhodium plated in the usual cheap sense; the alloy is pale and slightly warm next to steel.
Where Replicas Fall Short
Weight and metal
Gold is dense. A genuine white gold Nautilus on a full bracelet typically sits above 120 grams. Most replicas land 20 to 40 grams lighter because the case and links are steel or gold plated brass. A kitchen scale settles more arguments than a loupe.
Movement
The 26-330 S C shows Geneva stripes, circular graining, polished bevels, and a gold rotor with the Calatrava cross. Replica movements, usually built on a Miyota or a Chinese automatic clone, show flat surfaces, uniform brushing, and a rotor that spins loose with a rattle. One functional tell: a 26-330 S C hacks, so the seconds hand stops when the crown is pulled. The older 324 S C does not.
Dial and hands
Genuine embossing has depth and a crisp shadow line under a lamp. Replica dials show shallow stamping, uneven lume, and a date wheel that sits off center in the window. Check the printing weight of the brand name and the alignment of the date against the aperture edges.
Case, bezel, and bracelet
The bracelet should taper toward the clasp with polished center links and brushed outer links. The bezel chamfer is sharp, the crown sits flush, and the caseback engraving includes a reference and serial that match the movement inside.
How to Inspect a Watch of Unknown Origin
- Weigh the watch on a digital scale and compare against a published weight for the reference.
- Ask for a clear photo of the movement through the caseback before any money moves.
- Tilt the dial under a lamp and check that the horizontal embossing casts a shadow.
- Set the date and confirm it centers in the window at 3 o'clock.
- Pull the crown and confirm whether the seconds hand stops, then compare that behavior to the caliber the seller claims.
- Read the caseback engraving and match the reference number to the dial color and metal.
- Have a watchmaker open the case and verify the movement number against Patek Philippe records.
Practical and Legal Notes
Selling counterfeit watches is a federal offense in the United States under 18 U.S.C. 2320, and US Customs can seize shipments at the border. Buying a replica for personal use is a different matter from trafficking, but resale, import, and repair all carry risk. Patek Philippe will not service or authenticate a counterfeit, and a watchmaker who opens one can confirm the forgery in minutes. If the look is what you want without the exposure, a homage from a brand selling under its own name is the safer route.