Short answer
The reference 6654-3642-55B is a Blancpain Villeret Quantième Complet. It is a stainless steel watch with a complete calendar, a moon phase, and an alligator strap. Replica versions sold online copy the dial layout and the case shape. They are counterfeit goods. They are not made by Blancpain. They carry no Blancpain warranty, and Blancpain service centers will not repair them.
What the reference number covers
Blancpain builds its reference numbers in blocks. The 6654 block identifies the Quantième Complet line. The middle block, 3642, identifies the case and dial combination. The 55B suffix is a strap code, which in this range points to alligator leather. Blancpain does not publish a full public decoder for the middle block, so those digits are best confirmed with a Blancpain boutique or the brand product page.
Specs of the Villeret Quantième Complet
- Case: stainless steel, 40 mm diameter, about 11 mm thick
- Crystal: sapphire on the front and on the back for most versions
- Movement: automatic calibre 6654, complete calendar
- Complications: day, date, month, moon phase, plus a blued steel serpentine date hand
- Water resistance: 30 m
Blancpain lists 72 hours of power reserve for the calibre 6654. A program wheel corrects the calendar at the end of short months.
What replicas copy and what they miss
Replica cases often match the 40 mm diameter and the general dial layout. Differences show up in small parts. Fonts on the calendar discs run heavier. The moon phase disc is printed instead of engraved. The serpentine date hand is thicker. Polishing lines do not meet at the lugs.
The movement is the larger gap. Genuine watches use an in-house automatic calibre. Replicas use a generic Chinese or Japanese base movement with a bolt-on calendar module. On those movements the date snaps at midnight instead of stepping through the change. The moon phase runs on a fixed 29 day or 31 day cycle instead of the 29.53 day lunar cycle.
Legal status in the United States
Counterfeit watches are illegal to import and to sell in the United States. 18 U.S.C. § 2320 covers trafficking in counterfeit goods and carries criminal penalties. U.S. Customs and Border Protection seizes counterfeit shipments and destroys them. A single watch bought for personal use carries less exposure than a sale, but the item is still subject to seizure. Reselling a replica is a federal offense.
Resale and service
A replica has no resale value on the legitimate market. Genuine 6654 references trade on the used market; counterfeits do not. Parts for replica calendar modules are not standardized, so a repair often means replacing the whole movement. No Blancpain service center will accept the watch.
Points to check on any sample
- Case back engravings: depth, font, spacing.
- Calendar discs: text centered in the apertures, correct font weight.
- Moon phase: engraved and polished, not flat printed.
- Strap and clasp: alligator grain, signed folding clasp.
- Movement: rotor engraving and finishing under a loupe.
- Serial and reference numbers, checked against Blancpain records.