A fake Baignoire Allongée is a replica of Cartier's stretched-oval wristwatch, and the tells sit in four places: case proportions, dial printing, the crown cabochon, and the movement and engravings behind the caseback. The genuine case is a long, narrow oval, so a replica with a round or squat shape fails at first look. "Baignoire allongée" is French for "elongated bathtub," which describes the shape in plain terms.

What Is a Baignoire Allongée?

Cartier has built the Baignoire case since 1912, when the brand turned a round case into an oval that hugged the wrist. The Allongée version stretches that idea into a longer, thinner oval with the crown at 3 o'clock on the short side.

Genuine models come in yellow gold, rose gold, white gold, and steel, and some references carry a diamond-set bezel. Straps and bracelets range from leather to solid gold bands shaped to follow the case curve.

  • Case: a single flowing oval, no flats, no pinched sides.
  • Dial: Roman numerals, a rail track, and the Cartier signature in block letters.
  • Crown: a sapphire or spinel cabochon, set straight and cut with facets.
  • Strap: leather or an integrated gold bracelet with links curved to match the case.

How Do You Spot a Fake Baignoire Allongée?

  1. Case proportions. Lay a straight edge along the case. The oval should stay symmetric from lug to lug, with no flat run on one side.
  2. Dial printing. Check the "Cartier" text under the 12 and the "Swiss Made" line at 6. Fakes show lumpy letters, thick serifs, and Roman numerals that sit off the rail track.
  3. Crown cabochon. Genuine stones are cut with facets and catch light from several angles. Replica cabochons are glass or plastic beads, glued in crooked or set in a crown that sits too tall.
  4. Caseback engravings. Reference and serial numbers, gold hallmarks, and "Swiss Made" should be cut with depth. Laser etching looks shallow and gray.
  5. Weight. Solid gold feels dense in the hand. Plated brass and steel cases feel light, and plating wears at the lugs and caseback edges to show base metal.
  6. Strap fit. The gap between case and strap should be tight and even. Replica straps sit loose or need force to mount.

Why the Oval Shape Is the Hardest Thing to Copy

The Baignoire Allongée case is one continuous curve, and any wobble in that curve shows on the wrist. Many replica cases are cast from a mold taken off a photo, so the oval runs flat on one side or pinches near the lugs.

A genuine case has lugs that flow out of the curve instead of sitting on top of it. Cartier polishes the caseband to a mirror and leaves other surfaces with a soft satin tone. Fakes show tool marks, patchy polish, and a gold color that leans orange or green.

The crystal matters too. Genuine watches use sapphire with a clear anti-reflective treatment, so the dial reads clean at an angle. Mineral glass and acrylic on replicas throw reflections that hide the dial and scratch with daily wear.

Quartz or Mechanical? Read the Caseback First

Cartier fits quartz movements in several Baignoire references and hand-wound calibers in others, so a ticking seconds hand proves nothing by itself. Open the caseback, or ask for clear photos with it open, and look at movement finish, jewel count, and engraving on the bridges.

Most replica Baignoire Allongée watches run a generic quartz module. That keeps time well enough, but the inside of the case looks bare, with no Geneva stripes, no signed rotor, and no caliber number stamped where it should be.

Genuine vs Replica: What the Price Gap Tells You

Genuine Baignoire Allongée watches run into the thousands in steel and into the tens of thousands in solid gold with diamond-set bezels, depending on reference and year. Replica listings sit far below those figures, and price alone tells you little about quality.

A high asking price from a replica seller does not make the watch better. Judge the case shape, the dial print, and the movement instead, since those are the parts you look at every day.

Checklist Before You Buy a Fake Baignoire Allongée

  • Photograph the case edge-on and compare the oval to official product photos.
  • Zoom on the dial text and the rail track at 12 and 6.
  • Ask for a close shot of the crown and its stone.
  • Request caseback photos showing reference, serial, and hallmarks.
  • Confirm the crystal material and whether it has an anti-reflective coat.
  • Check weight and case thickness against the reference you want.
  • Buy from a seller who accepts returns, and inspect the watch on arrival.

FAQ

Is a fake Baignoire Allongée easy to spot?

Yes, if you know the oval. The case shape and the crown cabochon give a replica away faster than the dial or the strap.

Do replica Baignoire Allongée watches use real sapphire crystals?

Some higher-end replicas use sapphire, and many use mineral glass or acrylic. Skip the scratch test and look at the anti-reflective coating and how the crystal sits in the bezel.

What is the difference between Baignoire and Baignoire Allongée?

The Baignoire is a rounded oval. The Allongée stretches that oval into a longer, narrower shape. Same family, different proportions on the wrist.

Can a jeweler tell a fake from a real one?

A trained watchmaker can, though the answer may need a loupe and an opened caseback. Dial printing and movement finish are the two fastest checks.

A Short Recap

The case oval, the dial print, the crown cabochon, and the movement finish carry the whole story on a fake Baignoire Allongée. Get those four right and the rest of the watch is easy to judge. Compare any listing against official Cartier photos before you commit.