Short answer

A fake Breguet Classique 7137 is any watch that copies reference 7137 without being made by Breguet. The genuine watch has a hand-guilloche dial, a date, a power-reserve scale, and no running seconds at all. Copies usually fail on that dial layout first, then on the quality of the engine turning, then on the movement. Judge a rep in that order and you will not waste time on the caseback.

What the genuine reference does

Know the baseline before you inspect anything, because every tell is measured against it.

  • Calibre 502.3 DRP1, self-winding, driving a date and a power-reserve indication.
  • 39 mm case in 18k yellow, white, or rose gold, with a fluted case band and welded lugs.
  • Hand-guilloche dial with a date aperture at 3 o'clock and a power-reserve arc on the left side.
  • Blued steel Breguet hands, sapphire crystal front and back, no seconds hand.

That last point matters most. If a copy shows a small seconds subdial at 6 or a center seconds hand, it is not even copying the 7137 layout.

What to have on hand

  • A 10x loupe or a phone macro lens.
  • Reference photos of a genuine 7137 dial, shot straight on and in angled light.
  • A kitchen scale that reads to 0.1 g.
  • A bright, raking light source so the engine turning casts shadows.

Step by step: dial and hands

  1. Count the hands. Hours, minutes, date, power reserve. No seconds. Stop here if you see one.
  2. Look at the guilloche under angled light. Hand-cut engine turning shows crisp, continuous grooves; stamped or printed patterns look shallow and wash out.
  3. Check the date window. On the genuine, it is cleanly cut and the numerals are sharp and thin.
  4. Study the power-reserve arc. On cheap copies the needle is painted on or moves with the winding rotor instead of the mainspring.
  5. Read the signature at 12. Look for the hidden secret signature worked into the guilloche. Printed text with no engraving is a clear tell.

Step by step: case, back and weight

  1. Run a fingernail along the case band fluting. Genuine fluting is even and deep with polished crests.
  2. Turn the watch over. The engraving on the back should be sharp, aligned, and in the reference and serial format Breguet uses.
  3. Compare the serial on the caseback with the one on the movement. Mismatched numbers point to a built-up watch.
  4. Weigh the head without the strap. Solid 18k gold at this size has real heft; gold-plated brass and steel do not.
  5. Flex the lugs and check the spring bar fit. Welded lugs stay rigid, and sloppy aftermarket bars rattle.

Step by step: movement

  1. Study the finishing under the loupe. Breguet uses hand engraving and fine anglage; copies show laser lines and no chamfers.
  2. Wind it and watch the power-reserve needle. It should climb steadily and settle at full; a needle tied to the rotor is decorative.
  3. Set it face up and leave it for a day. A genuine 502.3 holds a steady rate in a fixed position; a cheap automatic drifts.
  4. Listen. A rough, scraping rotor points to an undecorated workhorse movement under an engraved plate.

Tiers, price and red flags

Copies of this reference come in three rough tiers. Stamped dials with printed guilloche and a dead power reserve sit at the bottom. Mid-tier builds use a decorated Miyota or ETA-type automatic with a working date but no true power reserve. The expensive end uses a decorated movement with a real power-reserve module, and that is where prices jump. Whatever the tier, certain tells hold:

  • Any seconds hand.
  • Printed or laser-etched guilloche that fades in angled light.
  • Caseback engraving that is shallow, crooked, or in the wrong font.
  • A power-reserve needle that never moves, or moves with the rotor.
  • A seller who will not send macro photos of the dial and movement before payment.

One legal note before you buy: in the United States, counterfeit watches are illegal to import and sell, and customs can seize a shipment. That risk sits with the buyer as much as the seller, so weigh it before you spend.