A fake Jaeger-LeCoultre Reverso 398 is a counterfeit watch sold under a reference tag that Jaeger-LeCoultre never issued. Genuine Reverso models carry Q-prefixed references and rectangular manual-wind calibres such as the JLC 822, so "398" works as a seller code rather than a factory designation. Authentication comes down to four checks: the sliding cradle, the engraving, the dial finish, and the movement.

Why does the "398" reference raise a flag?

Jaeger-LeCoultre catalogues modern Reversos with references that start with Q followed by seven digits, and older models with dash-separated case numbers. A bare "398" appears in replica listings, not in the manufacturer's catalogue. Ask the seller for a matching reference and serial on the caseback, the certificate, and the box before you trust the watch.

How do you test the Reverso's sliding and flipping case?

The Reverso case sits in a cradle and slides on rails before it flips. A genuine example glides with firm, even resistance and stops with a crisp click at both ends.

Counterfeits often skip the rails. They either pivot on a single hinge or rely on a loose track that wobbles from side to side. Run a thumb along both rails and look for the engraved "Reverso" script on the top and bottom of the cradle.

What should the engraving and finishing look like?

Genuine Reverso cradles carry deep, sharp engraving with crisp edges. Polished and brushed surfaces meet along a clean line, with no smeared or rounded transition.

Fakes usually show shallow laser etching, cloudy borders, and polishing compound residue in the crevices around the crown and the caseback.

What dial details separate genuine from fake?

Genuine dials use fine guilloché or textured finishes, applied indexes, and sword hands with polished bevels. The printing is thin and precise. Fake dials tend to show a flat pattern, misaligned indexes, and thick, raised printing that catches light unevenly.

How does the movement give the fake away?

JLC calibre 822 is a rectangular manual-wind movement built to fill the Reverso case. A round movement inside a rectangular case is a clear sign of a counterfeit.

Look at the bridges, the jewel count, and the finishing. Genuine movements show Geneva stripes, chamfered edges, and blued screws. Fakes often use plain plates or a decorated rotor that does not belong in this model.

What does the paperwork check confirm?

Jaeger-LeCoultre ships each Reverso with a certificate of the 1000 Hours control test and a matching serial number. Replicas rarely match the number across the caseback, the certificate, and the warranty card. A mismatched serial is enough to walk away.

Frequently asked questions

Is there a real Jaeger-LeCoultre Reverso 398?

No. Jaeger-LeCoultre has not catalogued a Reverso under a plain "398" reference. Treat the number as a marketplace label, not a factory code.

Can a fake Reverso use a real JLC movement?

Rarely. Some high-end replicas clone the calibre 822 shape, but genuine JLC movements carry finished bridges, correct jewel counts, and signed bridge or rotor engraving. Verify the movement against the reference before buying.

What is the single fastest check?

Slide and flip the case. If the cradle does not ride on rails with a firm click, the watch is very likely a counterfeit.