Short answer
A fake Vacheron Constantin Patrimony self-winding is a copy of the reference 85180 family: a 40 mm dress watch in 18k gold with an automatic calibre 2450 Q6. Copies come in two builds. One is gold-plated steel with a Seagull or Miyota movement. The other is a solid gold case with a counterfeit dial and a decorated clone movement. Four checks separate the two: movement finish, metal hallmarks, dial print, and caseback engraving. Vacheron Constantin does not sell loose cases, dials, or movements to third parties.
What the genuine watch is
The Patrimony self-winding 40 mm is the brand's core dress reference. Case diameter is 40 mm. Thickness is about 8.6 mm. Water resistance is 30 m. Crystal and display back are sapphire. The strap is alligator with an 18k gold buckle. The movement is calibre 2450 Q6: automatic, 27 jewels, 40 hours of power reserve. The rotor is 22k gold. The movement carries the Hallmark of Geneva, a stamp that covers finish and rate testing.
Finishing on the real movement
- Bridges with Geneva stripes, applied in one direction.
- Mainplate with circular graining.
- Bevels polished by hand, with sharp edges.
- Blued steel screws.
- 22k gold oscillating weight with the Maltese cross.
What copies get wrong
Clone movements use stamped decoration. Bevels sit rounded and matte. Screws are chrome-plated steel. The rotor is brass with gold plating, so it dulls at the edges. Dial print looks close in photos and soft in hand. Applied batons on copies are thin and sit low.
Check the metal
Genuine cases are 18k white, rose, or yellow gold. The caseback and buckle carry a 750 or Au750 stamp. Swiss gold also carries a precious metal control mark. Plated steel shows wear at the lugs and caseback rim within months. A magnet helps: gold is not magnetic, most plated cases and steel backs are. A full gold case head also feels heavier than a plated copy of the same size. Exact case head weights are not published as a single figure by the brand.
Check the dial and hands
Genuine dials use applied gold batons with faceted tops. Printing is sharp under a loupe. References with a date use a gold-framed aperture at 3 o'clock. Hands are faceted batons, polished on the top face. Copies show fuzzy print on the VACHERON CONSTANTIN and GENEVE lines. Hands on copies have flat, unpolished sides. The Patrimony line has no lume. A Patrimony with glowing markers is not a copy of this reference.
Check the caseback
Engraving on the genuine caseback is deep and crisp. It lists the reference, the metal, the case number, and Swiss made. Copies use laser etching that looks grey and shallow. The sapphire back on a copy often has a blue tint. Some copies print the movement text on the glass instead of on the movement.
Price and paperwork
Vacheron Constantin does not publish a single US list price for every Patrimony reference, and prices change by year and metal. New examples sit in the mid five figures in USD. Pre-owned pieces trade in the high four to low five figures. A new Patrimony self-winding offered for a few hundred dollars is a copy. Boxes, certificate cards, and service papers are copied as well. Papers alone prove nothing.
Legal position in the US
Trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. US Customs and Border Protection seizes counterfeit watches on import. Selling a counterfeit watch as genuine is also trademark infringement and fraud under state law.
Why the search term exists
Buyers search this term for two reasons. One group wants to check a watch before purchase. The other wants to buy a copy. Both groups need the same facts, and the checks above apply to both.