Short answer

Reference 387874 does not match a Jaeger-LeCoultre model in the brand's public catalog as written. JLC reference strings start with the letter Q and carry seven digits. A listing that shows 387874 alone leaves out the prefix and the variant suffix. Ask the seller for the full string, the case width in millimeters, and the movement calibre before you send money.

Why the number matters

JLC builds several models under one reference family. Case size, dial color, and bracelet type each change the suffix. The Reverso Classic line runs 36.4 x 22.9 mm in Small, 40.1 x 24.4 mm in Medium Thin, and 45.6 x 27.4 mm in Large. Two watches that share a family number can differ by 9 mm in length. A replica seller who cannot name the size is guessing.

Movement inside the replica

Genuine Reverso Classic models use the JLC Calibre 822, a hand-wound movement at 21,600 vph with a 45 hour power reserve. Replica builds in the $200 to $650 band use a Seagull ST17 or a Miyota 9039. The Miyota runs 28,800 vph and holds 42 hours. Case back stamps on replicas copy the genuine text, but the calibre line often reads ST17 or 9039 in place of 822. Have a watchmaker open the case back before you trust any stamp.

Checks before you pay

  1. Full reference string, including the Q prefix.
  2. Case dimensions in millimeters, measured, not copied from a listing.
  3. Movement maker and calibre number.
  4. Case material. 316L steel is standard. Plated brass shows wear at the lugs within months.
  5. Crystal type. Sapphire sits at Mohs 9. Mineral glass picks up marks.
  6. Water resistance claim. Most replicas carry a 3 ATM rating at best.

Price range

Replica JLC listings sit between $180 and $650. Genuine steel Reverso Classic watches list new from $7,400 to $11,000. Pre-owned examples trade from $4,000 to $8,500. A replica priced under $150 points to a quartz movement or a plastic crystal.

US legal position

Counterfeit watches cannot be imported into the United States. 19 U.S.C. 1526 lets Customs and Border Protection seize and destroy shipments. 18 U.S.C. 2320 carries prison terms up to 10 years for trafficking. Personal possession is not the charge. Import and resale are.