Quick answer
The Blancpain Villeret Complete Calendar 6654-1140-55B is one of the most copied dress watches on the market. The genuine reference pairs a 40 mm stainless steel case with the in-house Caliber 6654, a full calendar, and a moon phase at 6 o'clock. Copies get the silhouette right and fail on four points: the calendar correctors hidden under the lugs, the moon phase disc, the movement finishing, and the caseback engraving. Check those four first, then work through the list below.
Prerequisites
- A 10x loupe or a phone macro lens
- A bright diffused light source, plus a second light at a low angle
- A plastic toothpick or a proper corrector tool (never a paper clip or needle)
- Calipers or a ruler accurate to 0.1 mm
- Reference photos of the genuine 6654-1140-55B for side-by-side work
Step-by-step checks
- Measure the case across the bezel with calipers. The genuine case is 40.0 mm wide. Copies commonly run 1 to 2 mm wider because the movement inside is thicker.
- Measure case thickness. The real watch sits near 11 mm including the crystal. A copy over 12.5 mm almost always hides a modified generic movement.
- Find the calendar correctors. On the real 6654 they sit recessed under the lugs and are pushed with a soft tool. Fakes move them to the case flank, where they are easy to spot and easy to scratch.
- Study the moon phase at 6 o'clock. The genuine disc shows a finely drawn face with shading and a dark night sky with stars. Copies print a flat cartoon moon, and the aperture edges catch light in the wrong places.
- Inspect the hour markers under a loupe. Genuine applied indices are solid gold, faceted on the top edges, and stand clear of the dial. Fakes glue stamped markers flat to the surface and the facets look rounded or dull.
- Read the day, date, and month text. Genuine printing is crisp with a clean serif and even spacing. Copies show thickened letters, uneven baseline spacing, and a date window that is cut off-center.
- Turn the watch over and look through the sapphire back. Real Caliber 6654 shows Cotes de Geneve striping, polished bevels on the bridges, and blued screws. Fakes show stamped plates, no bevels, and painted stripes.
- Check the engraving on the caseback rim. Genuine engraving is deep, sharp, and filled with a consistent dark lacquer. Copies look shallow, fuzzy at the edges, or laser-etched with no relief.
- Examine the crown and the winding feel. The genuine crown is signed and cuts cleanly into the case profile. Winding a real automatic feels smooth with light resistance. A gritty or loose feel points to a cheap replacement movement.
Red flags at a glance
- Correctors on the case side instead of under the lugs
- A moon phase that looks flat or printed rather than drawn
- Any drilled lug holes or spring bar slots that do not match the reference
- A rotor that spins with a loud rattle or wobble
- Serial numbers that repeat across listings or use the wrong font
- A box and papers set with mismatched reference codes on the card and the caseback
If you are unsure
Stop and get a second opinion before money changes hands. A Blancpain authorized service center can open the case and confirm the movement serial against factory records, and that service is cheap next to the cost of a bad purchase. Ask the seller for a straight-on photo of the caseback, a macro shot of the moon phase, and a clear image of the movement with the rotor turned. Real sellers send these without argument. If the seller refuses, walk away.