Short answer
A fake A. Lange & Söhne watch is a counterfeit built to mimic the Glashütte maker's designs. Almost all of them fail the same three tests: the hand-cut balance cock engraving, the finish on the movement and case, and the serial number record held by the manufacture. Run the checks below before you send money, accept a trade, or list the watch for sale.
Before you start
Collect these items and details first. The photos and the serial number carry the most weight.
- A 10x jeweler's loupe
- Digital calipers and a scale accurate to 0.1 g
- Clear photos of the dial, case flanks, caseback, and movement
- The seller's reference number, serial number, and asking price
- The published specs for that exact reference
How to check a Lange Söhne watch, step by step
- Match the reference number against the published catalog entry for that model.
- Measure the case diameter, thickness, and lug width with calipers and compare each figure to the spec sheet.
- Weigh the watch on a scale accurate to 0.1 g and compare the total to the published weight.
- Inspect the balance cock engraving under the 10x loupe and look for cut depth that shifts across the scroll, a raised burr at the edge of each cut, and small differences from one watch to the next.
- Examine the movement screws for polished slots, chamfered heads, and even blue color across the set.
- Look at the dial text at 10x and check stroke weight, letter spacing, and the umlaut on Söhne.
- Turn the crown to wind the movement and set the hands, then note whether the detents click with a defined stop.
- Compare the case finish on the bezel, band, and caseback, since a genuine piece mixes polished and satin surfaces with a sharp break between them.
- Send the serial number to the manufacture or an authorized service partner and request the service record.
- Hand the watch to a watchmaker who has serviced Lange movements and ask for the caseback to be opened.
Red flags that end the inspection
- A price far under the market for that reference. Solid gold cases and in-house movements set a floor that no honest seller crosses.
- No caseback photos, or shots taken at an angle that hides the movement.
- A serial number the manufacture cannot confirm.
- Dial text with a wrong umlaut, a missing period, or uneven spacing between letters.
- A story about a factory outlet, a clearance lot, or a relative who picked it up in Asia.
- Papers that list a reference number which does not match the case.
Why the movement settles it
No counterfeit has reproduced the Lange three-quarter plate, the screwed gold chatons, or the hand-engraved balance cock. Those parts take a trained hand and a burin, and they cost more to make than the total price of a replica. A stock third-party movement with a decorated rotor or a printed bridge pattern shows up fast once the caseback comes off. If a seller refuses to let a watchmaker open the watch, treat the offer as closed.
Lange Söhne Replica Watch: What It Is and What Buyers Face
What to do if the watch turns out to be fake
Stop the payment if the transfer has not cleared. In the United States, trafficking in counterfeit goods violates 18 U.S.C. 2320, and large marketplaces remove listings on a valid report. Keep the messages, the listing photos, and the payment record. A written appraisal from a qualified watchmaker supports a chargeback claim or a police report. Do not relist the watch. Passing it on creates the same problem for the next buyer and exposes you to the same liability.