The Patek Philippe Nautilus 5711/1R-001 is a 40 mm rose gold watch with a brown gradient dial and an integrated rose gold bracelet. Patek ended the 5711 line in 2021. Fakes of this reference exist in large numbers. The fastest checks are weight, case thickness, movement finish, and the dial gradient.
Genuine 5711/1R-001 specs
- Case: 40 mm diameter, 8.3 mm thick, 18k rose gold
- Dial: brown sunburst with a black gradient, applied rose gold markers, date at 3 o'clock
- Movement: caliber 324 S C, replaced by 26-330 S C in later production
- Frequency: 21,600 vph (3 Hz). Power reserve: about 45 hours
- Water resistance: 120 m. Sapphire crystal front and back
- Bracelet: integrated, 18k rose gold, fold-over clasp with the Calatrava cross
Weight is the first tell
18k rose gold is dense. Gold runs about 15.6 g/cm3 against 8.0 g/cm3 for stainless steel. A full rose gold 5711 bracelet carries most of the mass. Most replicas use plated steel or brass and land far under the genuine figure on a scale. Plating also wears at the clasp edges and bracelet screws, which exposes the base metal.
Movement checks
Patek finishes the 324 S C and 26-330 S C by hand. Bridges show Geneva stripes, beveled edges, and circular graining on the mainplate. The rotor is solid gold with the Calatrava cross and the Patek Philippe engraving. Replicas in this price class often hide a Miyota 9015 or a Chinese automatic behind a decorated plate. The 26-330 S C adds stop-seconds, so the second hand halts when the crown is pulled.
Dial and case details
The genuine dial shifts from brown at the center to black at the edge. Printing is sharp at 10x magnification. The date wheel font matches the dial text. The case flanks are brushed, with polished bevels on the left and right. The octagonal bezel is polished on the flat and satin on the top curve. Replicas show a flat or muddy gradient, thick date numerals, and soft bevels.
Common replica tells
- Case thickness of 10 mm to 12 mm against 8.3 mm
- Magnet response from a steel case and bracelet under gold plating
- Loud rotor spin on a low-grade automatic
- Wrong date font and misaligned date window
- Bracelet screws that differ from the genuine slotted part
Price and legal notes
Genuine 5711/1R-001 examples sold far above retail on the secondary market after the 2021 discontinuation. In the United States, selling or importing counterfeit watches breaks trademark law, and U.S. Customs can seize shipments. Papers, service records, and a Patek Philippe Extract from the Archives do not prove a watch is genuine on their own.