Core buying advice
Do not buy a fake Jaeger-LeCoultre Reverso 3988420. The reference 3988420 is a real Jaeger-LeCoultre model, and counterfeit versions are illegal to import or sell in the United States. They also lack the case finishing, movement quality, and warranty support of the genuine watch. If you want this Reverso, buy from an authorized Jaeger-LeCoultre dealer or a reputable pre-owned seller who provides the original box, papers, and service history.
What to look for in a genuine Reverso 3988420
The real Reverso Classic Large Duoface Small Seconds, often listed as Q3988420, has a reversible steel case. The front dial shows hours, minutes, and small seconds. The back dial adds a second time zone with a 24-hour day/night indicator. Check the case dimensions: about 47 mm lug to lug, 28.3 mm wide, and 10.3 mm thick. The movement is a manual-wind Jaeger-LeCoultre caliber, and the watch should feel solid with crisp crown action and a smooth slider mechanism.
Case and dial checks
- Reverso cases slide and flip with tight tolerances. A fake often feels loose or gritty.
- Dial printing should be sharp, with correct font weight and spacing.
- The small seconds hand should move smoothly, not tick in one-second steps.
- Look for the Jaeger-LeCoultre logo and reference engraving on the caseback. Fakes often use shallow or uneven engraving.
Movement and materials
Genuine Reverso 3988420 watches use a JLC manual movement, sapphire crystal, and stainless steel or precious metal cases. Counterfeits may use plated brass, mineral glass, and low-grade automatic or quartz movements. Those parts fail early, and no authorized service center will repair them. A real watch keeps time within a few seconds per day and can be serviced for decades.
Parameter bands to verify
- Case size: roughly 47 x 28.3 mm for the Classic Large Duoface.
- Thickness: about 10.3 mm.
- Water resistance: 30 meters for the classic Reverso, enough for splashes only.
- Power reserve: around 42 hours for the manual caliber.
- Dial layout: small seconds on the front, second time zone and 24-hour indicator on the back.
Pitfalls when shopping
Listings that say 'fake Jaeger-LeCoultre Reverso 3988420' or 'replica' are selling illegal goods. Avoid sellers who use stock photos, refuse a video call, or offer no return policy. A common trick is to show a genuine watch in photos but ship a counterfeit. Another is to claim 'AAA quality' or 'Swiss made replica.' Those labels mean nothing. You also risk customs seizure, chargebacks, and no warranty. If a price seems far below the market for a real Reverso, it is not a bargain. It is a counterfeit.
FAQ
Is it legal to buy a fake Jaeger-LeCoultre Reverso 3988420 in the US?
No. Federal law prohibits trafficking in counterfeit goods, and importing them can lead to seizure and penalties.
Can a fake Reverso 3988420 be serviced?
No. Authorized watchmakers will not service counterfeits, and parts are not available. You would rely on cheap replacement modules that fail.
What should I buy instead?
Buy the genuine Reverso 3988420 from an authorized dealer, or consider a pre-owned example with full set and service records. If the real watch is out of budget, look at entry-level Swiss watches from brands like Tissot, Hamilton, or Longines. They are legal, serviceable, and hold value.