Answer
A replica Villeret complete calendar copies the Blancpain Villeret Quantième Complet, reference 6654. It shows day of week, month, date, and moon phase. The genuine watch runs caliber 6654, a 40 mm case, and 30 m water resistance. Replicas differ by factory and batch. Most use a Chinese automatic movement with an added calendar module. Street price sits near $300 to $600.
What a complete calendar does
A complete calendar tracks four values: day, date, month, moon phase. It does not know that February has 28 or 29 days. The owner advances the date by hand at the end of each short month. A perpetual calendar handles the leap year cycle with no input. An annual calendar handles every month except February. The Villeret complete calendar sits in the middle group.
Dial layout of the 6654
- Day and month in two windows at 12 o'clock.
- Date shown by a serpentine hand that points to a 1-31 track on the dial edge.
- Moon phase aperture at 6 o'clock with a dark blue disc and stars.
- Applied Roman numerals on an opaline dial. Leaf shaped hands. No lume.
Movement and case
Genuine caliber 6654 is automatic. It beats at 28,800 vibrations per hour, or 4 Hz. Power reserve is 72 hours. The case measures 40 mm across and about 10.9 mm thick. Water resistance is 30 m. Sapphire covers the dial. The back is sapphire on some references and solid steel on others.
Replica movements differ. Some use a Seagull ST25 base. Some use a Miyota 9015 with a calendar plate on top. Some batches use a decorative bridge plate that copies the Blancpain rotor and bevels. Sellers do not always name the base caliber. Ask for a movement photo. If the seller cannot name the base caliber, treat the claim as unconfirmed.
Correction points
Recessed correctors sit on the case flank. A pin tool pushes each one. The date, day, month, and moon phase correctors are separate on the original. Do not use a corrector between about 9 p.m. and 3 a.m. The calendar gears are engaged in that window and the pin can shear teeth. Move the hands to 6:30 first.
Checks before buying
- Day and month windows: text centers, no clipping, matching font weight.
- Pointer date hand: the tip lands on a number, not between numbers.
- Midnight jump: date and day change within a few minutes of 12.
- Moon phase: one full cycle takes 29.5 days. A disc that flips twice per day is wrong.
- Case thickness: replicas often measure 12 mm to 13 mm. The original part is thinner.
- Correctors: flush with the case, no sharp edges, all four push and spring back.
Prices and expectations
Prices for this model sit near $300 to $600. More money buys better case finishing, closer dial print, and a sapphire crystal with inner anti-reflective coating. It does not buy a genuine grade calendar mechanism. Short month adjustment stays manual on every replica. Service support for Chinese calendar modules is thin in the US. A watchmaker who takes the job will charge for a full tear down.
Known gaps
Two details repeat across batches. The star pattern on the moon disc varies in size and count. The date track print sits a little closer to the chapter ring than the original. Caseback engraving depth and font also differ. None of these gaps show at arm's length.