The replica Villeret 6654 copies Blancpain's 40 mm Quantième Complet, a complete calendar watch with a moon phase display. A convincing copy matches the genuine case at about 40 mm wide and roughly 11.7 mm thick, drives a working calendar module, and sits under a sapphire caseback. Most failures show up in three places: the moon phase disc, the recessed correctors on the case flank, and the overall thickness of the watch.
A quick note before buying. The genuine 6654 is an in-house watch that carries a full manufacturer warranty and a service network. A copy carries neither. Trading counterfeits is restricted in many markets, and no brand will service one, so budget for an independent watchmaker if the calendar module ever needs work.
What the Villeret 6654 Actually Is
The reference belongs to Blancpain's Villeret line and runs the in-house calibre 6654, an automatic movement with a 72 hour power reserve. The dial layout is a complete calendar: day and month in twin apertures below 12 o'clock, a date hand or aperture depending on the variant, and a moon phase at 6 o'clock. Because a complete calendar does not track leap years, the date needs manual correction after February and in months shorter than 31 days.
Setting happens through small recessed correctors on the case flanks, not through the crown. That single detail separates accurate copies from careless ones, because the corrector positions are fixed by the genuine case design and cannot be faked with extra pushers.
Before You Buy
- A clear reference photo of the genuine 6654 for side by side comparison.
- A digital caliper that reads to 0.1 mm.
- A 10x loupe or a phone macro lens.
- The name of a local watchmaker who will work on a calendar module.
How to Inspect a Replica 6654
- Measure the case diameter and thickness before anything else. A real 6654 case is about 40 mm across and 11.7 mm thick. Copies that read 42 mm or 14 mm are the wrong shape no matter how good the dial looks.
- Set the day, date and month to a known value, then advance each one. All three should move with a firm click and land centered in their apertures. Sloppy printing or off center alignment is a common fault.
- Locate the correctors on the case flank and press each one with the tool supplied. Count them against the reference photo. Extra pushers or wrong spacing mean the case was not built for this layout.
- Look at the moon phase disc under magnification. Genuine discs show a finely stamped moon with a matte finish and a deep blue field. Copies usually show a flat printed circle with a glossy sheen and stars that run into the moon.
- Study the dial printing and markers. Check that the brand text sits at the same height as the reference, that the Roman numerals are applied rather than painted, and that the minute track is crisp at 10x.
- Turn the watch over and read the movement. A sapphire caseback should show a decorated rotor, perlage or Cotes de Geneve striping, and engraved text that aligns straight. A blank or roughly stamped rotor is the clearest sign of a cheap build.
- Inspect the case finishing on the lugs and bezel. Look for sharp edges, uneven brushing, or a polished bevel that disappears halfway along the lug.
- Check the strap and buckle. Stitching should be even, the leather should not smell of plastic, and the buckle tang should sit square in the holes.
- Time the watch over 24 hours against a phone clock. A copy that gains or loses more than 15 seconds a day needs regulation or a return.
Specs Worth Verifying
- Case width near 40 mm and thickness near 11.7 mm.
- Working day, date and month functions, each independently settable.
- Moon phase disc that advances once per lunar month, not once per day.
- Sapphire crystal front and back, not mineral glass.
- Water resistance stated by the seller, usually 30 m at best on a copy.
Red Flags
- Seller photos that never show the caseback or the case flank.
- A moon phase that rotates with the date instead of running on its own gear.
- Calendar correctors replaced by a single pusher or by crown pulling.
- Weight that feels hollow or a case that rattles when shaken.
Care and Long-Term Ownership
Keep the watch away from water regardless of the rating on the spec sheet, because gaskets on copies are rarely tested. Wind and set the calendar during daylight hours rather than near midnight, when the date change mechanism is engaged and can jam. Have the movement serviced every three to five years, and ask the watchmaker to inspect the calendar module at the same time. Store it in a dry case, and keep the corrector tool with the watch so the calendar can be adjusted without scratching the case flank.