Short answer
A Breguet 7787BB replica is a counterfeit copy of the white-gold Classique 7787, a dress watch with a 39mm case, moonphase display and power-reserve indicator. The good copies get the silhouette and dial layout close. They still are not Breguet watches. I would judge one by function first, finishing second, and paperwork last, because paperwork is the easiest thing to fake.
What the real 7787BB is
The 7787BB is the white-gold version of Breguet’s Classique 7787. The real watch uses a precious-metal case, an automatic movement, and a dial layout built around two complications: moonphase and power reserve. Breguet’s own reference information is the place to confirm case size, thickness, water resistance, and dial finish for the exact suffix. Do not trust a replica listing that treats all 7787 versions as one watch.
Counterfeit Breguet 7787: How to Spot a Fake Classique
Where replicas usually fall short
- Case shape: the lugs, crown and bezel profile often look slightly soft or thick next to the real 39mm case.
- Dial printing: Breguet-style numerals and minute tracks need crisp edges. Copies often show heavier ink or uneven spacing.
- Moonphase: a real moonphase advances on a lunar cycle. Many replicas use a day/night disc or a crude 31-day wheel.
- Power reserve: the indicator should move as the mainspring winds and unwinds. A decorative hand is common.
- Finishing: look at the caseback, rotor, bridges and screws. Real Breguet finishing is clean and consistent. Replica finishing tends to be shallow.
Checks I would make
- Compare the exact reference to Breguet specifications, not a generic 7787 photo.
- Set the moonphase and watch whether it moves correctly over several days.
- Wind the watch fully and track the power-reserve hand against actual run time.
- Inspect the dial under a loupe for dust, misaligned subdials and crooked print.
- Ask about movement service. A replica with no service path is a disposable watch.
Legal and practical caveats
In the US, selling counterfeit goods is illegal, and imports can be seized by customs. A replica also has no Breguet warranty, no collector value, and no guaranteed parts support. If you want the look for a costume or photo shoot, that is one conversation. If you want a watch to keep and service, a replica is the wrong lane. I would rather own a modest legitimate dress watch than a fake 7787BB that fails at the moonphase.