Short Answer
"Fake Villeret 8 days" describes replica Blancpain Villeret watches sold with a claim of an 8-day power reserve. The genuine watch runs 192 hours on one wind. Most replicas run 36 to 45 hours. The "8 days" text in a listing is a marketing claim, not a measured spec.
The Genuine Watch
Blancpain makes the Villeret line in Le Brassus, Switzerland. The 8-day models use a manual-wind in-house calibre with two mainspring barrels. Blancpain rates the reserve at 192 hours. Case size is 42 mm on several references. Case metals include steel, rose gold, and platinum. Prices sit in the five-figure range, and the secondary market tracks close to retail. Reference numbers change by year and metal, so one list does not cover the line.
What Replicas Use
Replica builders pair Villeret cases with third-party movements. Common bases are the Seagull ST17, the Hangzhou 6300, and decorated automatic clones. These movements carry 36 to 45 hours of reserve. Some replicas add a power reserve hand that sits on a fixed gear, so the needle moves and the spring does not follow it. Case thickness runs 1 to 2 mm over the original. Caseback engraving is shallow. Bridge text on clone movements is printed, not cut.
Test an 8-Day Claim
- Wind the watch to the stop.
- Note the date and time.
- Set the watch dial up on a desk at room temperature.
- Check it at 24, 48, 72, 96, and 120 hours.
- Record the hour it stops.
A result under 60 hours rules out an 8-day movement. A result near 192 hours is the target. Few sellers publish this test.
Price Signals
Replica listings run $150 to $900. Genuine Villeret 8-day watches sell in the five-figure range. A listing at $400 that reads "1:1 Swiss made, 8 days" is a replica with a claim sheet, not a Swiss watch.
Legal Status in the US
Counterfeit watches are illegal to import and to sell in the United States. Trafficking in counterfeit goods is a federal crime under 18 U.S.C. 2320. U.S. Customs and Border Protection seizes and destroys counterfeit shipments. A single item for personal use faces seizure at the border. Resale adds criminal exposure. Payment disputes are hard to win when the goods are counterfeit.