Quick answer
The Patek Philippe 5271 is a perpetual calendar chronograph in platinum with a diamond-set bezel. It measures 41 mm across and runs the hand-wound calibre CH 29-535 PS Q. Replicas sold as "5271G" copy the case shape and dial layout. Most do not copy the movement. Expect a Chinese hand-wind chronograph base, a calendar that may not track leap years, and a bezel with fewer or lower-grade stones than the original.
Note on the reference: Patek's published references for this model use the P suffix (platinum). Some dealer listings write 5271G. I could not confirm a catalog reference 5271G. The G suffix normally denotes white gold, so check which metal a listing actually describes.
Genuine reference points
- Case: platinum, 41 mm diameter, sapphire crystal front and back.
- Bezel: set with baguette diamonds.
- Movement: calibre CH 29-535 PS Q, hand-wound, column wheel, horizontal clutch, 65-hour power reserve, 28,800 vph.
- Functions: chronograph with 30-minute counter, perpetual calendar (day, date, month, leap year), moon phase, day/night display.
- Strap: alligator with a platinum folding clasp.
Replica tiers and price bands
Wholesale listings fall into three bands. Entry tier: $60 to $120. Quartz or a basic automatic, printed dial, glued stones or no stones. Mid tier: $150 to $300. Hand-wind chronograph, often a Seagull ST19 base, working pushers, calendar windows set by the crown. Top tier: $350 to $700. Closer case profile, sapphire, better stone channels, decorated bridges. Prices move with metal choice and stone count. These bands shift with supply, so treat them as ranges, not fixed rates.
Checks that separate tiers
- Stone setting. Original baguettes sit in a channel with even gaps. Replicas use round stones, uneven gaps, or glue.
- Subdial spacing and hand length. Compare the 3, 6 and 9 positions against a photo of the reference.
- Calendar function. Set the date and watch it flip. A snap at midnight needs a real module. A slow crawl does not have one.
- Caseback. Look at engraving depth and movement finish. A printed plate or a solid back signals a lower tier.
- Weight. Platinum is dense at 21.45 g/cm3. A steel or alloy case feels light in the hand.
What to ask a seller
Ask for movement photos, case measurements in mm, crystal material, stone count and stone type, and the return window in writing. Ask if the perpetual calendar is a working module or a decorative dial. Many listings use a stock photo of a genuine watch. Request a photo of the exact unit you will receive.
Legal and practical notes
Replica watches are not genuine Patek Philippe products. They carry no manufacturer warranty and no service from the brand. Sale and import rules differ by country. In the United States, importing counterfeit goods is prohibited. Treat any "1:1" or "AAA" label as marketing text, not a grade.