Short answer
The Breguet 5207 is a low-production Classique dress watch, so no replica factory has the original tooling. Every fake Breguet 5207 on the market is built from a base dress-watch case and a decorated generic movement. The top 1:1 replicas copy the coin-edge caseband, the engine-turned dial and the Breguet hands well enough to pass at arm's length. They fall apart under a loupe on dial texture, engraving depth and movement finish. Judge any replica on those three points, and confirm the exact reference specs before you compare anything.
What you are comparing against
Breguet Classique references share a set of traits you can check without opening the watch: a slim case with welded lugs, a fluted caseband, a hand-guilloche dial, blued steel Breguet hands, and a signed caseback with a reference and serial number. The 5207 sits in that family. Pull the official reference data for the exact variant you are looking at, since dial layout and case metal change between versions.
Prerequisites
- A loupe or macro lens at 10x
- Digital calipers
- A gram scale
- The official spec sheet for the reference you are comparing
- Photos of a genuine example from an auction archive
How to judge a fake Breguet 5207
- Write down the official case diameter, thickness and lug width for the reference.
- Measure the case with calipers and compare each number to your notes.
- Run a fingertip over the caseband fluting and check for even ridges with no burrs.
- Put the loupe on the dial and look for a repeating pattern with clean intersections.
- Turn the watch in light and check that the hands are blued steel, not painted blue.
- Read the dial signature under the loupe and check letter spacing and font weight.
- Turn the watch over and inspect the caseback engraving depth, reference and serial.
- Look through the display back at the rotor, bridges and the perlage or cotes finish.
- Weigh the watch on the gram scale and compare against a known figure for that metal.
- Ask the seller for the movement maker, service history and return window in writing.
Red flags
- Numbers that miss the official spec by more than a fraction of a millimeter.
- A printed dial that looks flat instead of cut into the metal.
- Laser-etched engraving that has no depth when lit from the side.
- A rotor that spins with a cheap rattle or winds with a rough feel.
- A price far under the going rate for the replica tier being advertised.
What no replica gets right
Hand guilloche is cut on a rose engine, and that shows in the way light moves across the dial. Replicas use stamped or printed patterns. Movement finishing is the second gap: real Breguet movements carry hand-applied decoration, adjusted regulation and a signed rotor, while replica movements are mass-produced and decorated to look the part. Caseback engraving is the third. Factory stamps are crisp and consistent, replica stamps often show a soft edge and the wrong font weight.
Buying note
Treat a replica as a replica. Ask for photos of the exact watch you will receive, not a stock image, and confirm the return terms before payment. If a seller claims a fake Breguet 5207 is genuine, walk away.