Short Answer
No Breguet reference 7787 has a tourbillon. The 7787 is a Classique model. Its dial carries a power-reserve sector and a moon-phase display. Breguet puts tourbillons in other references, including the 5307, 5317, 5357 and 5377 lines. A product title that reads "Breguet tourbillon 7787" joins two things Breguet does not sell together.
What the Breguet 7787 Is
Breguet lists the 7787 as a Classique with caliber 591 DRL. The dial shows hours, minutes, seconds, a power-reserve indicator and a moon-phase aperture. Case options include yellow gold, white gold and rose gold, with guilloche dial work. Reference suffixes code the metal and the dial, so 7787BR and 7787BB are different watches.
Where "Tourbillon" Comes From in Listings
Two sources. First, search terms get merged in titles to catch more queries. Second, some replica dials have an open aperture near 6 o'clock, and buyers read that as a tourbillon cage. A tourbillon is a rotating carriage that holds the balance wheel and the escapement. On most watches the carriage turns one time per minute. You can time one turn with a phone stopwatch. An aperture with a fixed bridge and no rotation is not a tourbillon.
Two Different Products Called "Tourbillon Replicas"
The first is a working tourbillon movement built in China, such as the Seagull ST8000 family. Bare movements sell in the low hundreds of US dollars. The second is a decorative fake: an open dial with a balance wheel that oscillates but no rotating carriage. Fake versions cost less to build and appear in the cheapest listings. The two look similar in a photo and differ under a loupe.
Price Gap
Genuine Breguet tourbillon references list at 100,000 USD and above. Genuine 7787 watches trade in the tens of thousands. Replica listings for the same reference run from about 50 USD to several hundred USD. The gap tracks the movement, not the case finish.
US Law
18 U.S.C. 2320 covers trafficking in counterfeit goods. Penalties include prison terms and fines. US Customs and Border Protection inspects and seizes counterfeit watches at ports of entry, and seizures cover personal-use shipments. A seizure notice states the basis and the options. The goods do not reach the buyer.
Checks
- Time one carriage rotation. One minute equals a real tourbillon.
- Read the case back. Genuine Breguet engraving names the caliber and a serial number.
- Match the reference to Breguet's catalog. The 7787 does not appear there as a tourbillon.
- Weigh the finish against the price. A 50 USD watch does not carry a hand-finished movement.
Breguet does not publish production totals for the 7787, so the count of genuine units in the market is not public.