Quick answer
A fake Patek Philippe Sky Moon is a replica of the Sky Moon Tourbillon, reference 5002 or reference 6002. No replica reproduces the original functions. The real watch has a minute repeater, a tourbillon, a perpetual calendar, and a sky chart that rotates on the back dial. Replicas show printed versions of those elements. Replica prices run from about $150 to $900. Original examples sell at auction for $1 million and more.
What the original is
Patek Philippe released the Sky Moon Tourbillon as reference 5002 in 2001. It was the first Patek wristwatch with two dials, one on each face. Reference 6002 replaced it in 2014. The 6002 case is white gold with hand engraving. The dial uses Grand Feu cloisonne enamel. Patek lists the caliber as R TO 27 PS QR, a hand-wound movement with a tourbillon and a minute repeater with cathedral gongs. The rear dial shows a sky chart, sidereal time, and a moon phase. Production was limited. Patek has not published exact output numbers.
What replica versions change
- Movement. Most replicas use a Chinese automatic or quartz movement. They do not chime. Some have a decorative balance that does not turn.
- Sky chart. Printed or stamped on a disc. On the original the chart turns once per sidereal day.
- Rear dial. On many replicas the display is fixed. It cannot be set to the sky above a chosen location.
- Case. Steel or gold plated, not solid white gold. Engraving is stamped, not cut by hand.
- Weight and thickness. Replicas often run thicker because the movement is a standard size.
Checks before buying
- Ask for the movement name and a video with sound. The original chimes. A silent watch is not a functional copy.
- Check the caseback. A printed sky chart does not move.
- Ask for photos of the actual unit. Many sellers reuse factory photos.
- Confirm the case diameter and thickness against the published spec.
Price ranges
Low-end copies cost $150 to $300. Mid-range copies with a second time zone cost $400 to $900. No replica at any price matches the original complications. Auction results for the 5002 and 6002 are public on Christie's and Sotheby's.
Legal note
Selling or importing counterfeit watches is illegal in the United States. US Customs can seize shipments. Patek Philippe does not service or authenticate replicas.