The short answer
A fake Breguet 5287 usually fails on three fronts: case construction, dial finishing, and movement decoration. Genuine Breguet Classique watches use a fluted case band cut from the solid, welded lugs, hand-guilloché dials, and movements finished by hand. Counterfeits copy the silhouette but rely on stamped dial patterns, cast or soldered lugs, and industrial surface finishing that looks flat under a loupe. Before you judge any watch, get the official reference specification for the 5287 from Breguet and compare the physical piece against it.
Prerequisites
- A 10x jeweler's loupe and a bright, diffused light source
- The official Breguet spec sheet for reference 5287: case size, metal, movement caliber, and functions
- A soft mat, a microfiber cloth, and clean hands or finger cots
- A timegrapher or access to a watchmaker who owns one
- A small digital scale if you want to compare weight against a known example
Step-by-step authentication checks
- Print or save the official reference specification for the 5287 so you have case diameter, thickness, metal, and movement caliber in front of you.
- Place the watch on the mat under diffused light and note the overall case proportions against the specification.
- Run a fingertip around the case band and confirm the flutes are cut into the metal with even spacing and sharp edges.
- Inspect the lugs from the side and check that they read as one continuous piece of metal with the case, not a separate part standing proud of the surface.
- Turn the watch over and read the caseback engraving under the loupe: reference number, metal mark, and serial should be crisp, deep, and evenly spaced.
- Examine the dial pattern at an angle and confirm the lines are cut, not stamped, with clean intersections and no shallow or blurred patches.
- Look at the hands under magnification and verify they are blued steel with hollowed eccentric tips and a mirror-polished bevel.
- Tilt the dial toward the light and search for the hidden signature Breguet etches into the dial surface.
- Check every printed element on the dial for sharp edges, correct spelling, and consistent weight of line.
- Inspect the crown and any pushers for correct proportions, straight fluting, and smooth travel with no grit.
- Open the caseback or view it through a display back and study the movement: hand-chamfered bridges, polished screw heads, Geneva stripes, and engraved caliber markings.
- Compare the movement caliber number against the specification and check that the engraving style matches other Breguet movements of the same era.
- Verify the serial number appears consistently on the caseback, the movement, and the paperwork, with no re-stamping or mismatched fonts.
- Run the watch on a timegrapher and record rate, amplitude, and beat error before and after a full wind.
- Weigh the watch and compare it to a documented example of the same reference in the same metal.
- Ask for the original box, certificate, and service records, then confirm the serial with an authorized Breguet retailer or the brand archive.
Where counterfeits give themselves away
Dial finishing
Hand guilloché has depth. Lines catch light differently as you rotate the watch. Stamped copies look uniform and slightly soft, and the pattern often loses definition near the center or the date window.
Case band and lugs
The fluted band on a genuine Classique is machined from the same block as the case. Fakes frequently show a seam, uneven flute depth, or lugs that were added and polished afterward.
Movement
Industrial finishing shows up as rounded, unpolished edges on bridges, flat screw heads, and generic engraving. Genuine Breguet movements show hand chamfering, polished jewel sinks, and blued screws with clean slots.
Numbers and paperwork
Serial and reference numbers that differ in font, depth, or position between the caseback and the movement are a strong warning sign. So is paperwork printed on stock card stock with no dealer stamp.
What to do if you are unsure
Stop the transaction. Take the watch to a watchmaker who services Breguet, or send the serial and photographs to an authorized retailer for confirmation. No seller should object to an authentication check on a watch at this level, and a refusal is an answer in itself.