Short answer
A fake Breguet Classique perpetual calendar can pass in photos. The weak points are the movement, the calendar logic and the dial finish. Ask for photos of the movement. Test the February 29 change. Compare the caseback marks with the reference.
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What a perpetual calendar does
A perpetual calendar tracks the 28, 29, 30 and 31 day months and the leap year. The mechanism needs a 48 month program wheel or cam. A watch that shows day, date and month but ignores the leap year is a triple calendar or an annual calendar. Many replica listings use the word perpetual for any calendar watch.
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Movement check
A real perpetual calendar uses a mechanical caliber. The calendar works off the motion works and a program wheel. Replica sellers fit quartz modules or stock automatic movements with added calendar modules. Ask for a photo of the balance wheel and the rotor. Ask for a video of the date change at midnight. A quartz watch ticks once per second. A mechanical watch sweeps.
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Leap year test
Set the watch to February 28, 2028. Advance the date with the crown or pusher. A true perpetual calendar moves to February 29, then March 1. A fake without a leap year wheel jumps from February 28 to March 1. Some fakes have a leap year hand that never moves. The hand sits on a 4 year scale, marked 1, 2, 3 and 4 or with a small arrow.
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Moon phase check
The moon phase disc follows a 29.5 day cycle. A common fake uses a 24 hour day and night disc with a printed moon. Check that the moon moves one step per day. Check that the corrector pusher at the case side works. The moon on a genuine Breguet dial has a silvered or gold finished disc with a crisp edge.
Dial and case check
Breguet uses engine-turned guilloché. On a real dial the pattern cuts into the metal. On a low tier fake the pattern is stamped or printed. Check the hands. Breguet hands have a polished finish and a hollow eccentric tip. Check the secret signature. It sits in the dial near 11 or 12 o'clock on some references and needs magnification. Check the caseback. Genuine engravings are crisp. Reference and serial numbers should match the papers and the Breguet archive.
Size and weight
Most Breguet Classique perpetual calendar references measure 39 to 41 mm across. A gold case weighs more than a plated brass case. A 41 mm gold watch head on a strap weighs about 70 to 90 grams. Ask the seller for the case diameter and the weight. Compare both with the reference.
Price tiers
Few listings under $200 include a working perpetual calendar. Mid tier replicas at $400 to $1,200 often use a modified automatic calendar. Top tier builds cost more. No replica at any price matches a Breguet in-house perpetual calendar caliber in finish or service life.
U.S. legal note
U.S. law bans the import of counterfeit goods. CBP can seize a shipment and assess penalties. Selling a replica as a genuine watch is fraud. A buyer who orders from an overseas seller carries the customs risk.
Questions for the seller
- Which movement is in the watch?
- Can you send a photo of the balance wheel and rotor?
- Does the leap year indicator move on its own?
- What is the case diameter and weight?
- Is the dial engine-turned or printed?
- Can you show the watch set to February 28, 2028?
- What is the return policy?