Short Answer
A fake A. Lange & Söhne exposes itself at the back of the watch, not the front. Lange finishes every movement in Glashütte with a hand-engraved balance cock, a three-quarter plate in untreated German silver, screwed gold chatons and a signature cut by hand. Counterfeiters copy the dial layout and the case profile, but they cannot match that finishing at a fake price point. When a "Lange" shows up far below market, the movement usually tells the story: stamped engraving, plated brass bridges, painted blued screws and a winding feel that belongs to a cheap automatic.
You do not need to be a watchmaker to catch most fakes. You need good light, a loupe, reference photos of the exact reference number and the patience to check five or six details in order.
Before You Inspect
- A 10x jeweller's loupe
- Bright, diffused light and a soft cloth
- Official photos of the same reference number and calibre
- Clear photos of the movement, dial and caseback from the seller
- The original papers, box and service records if they exist
Step-by-Step Authenticity Check
- Place the watch face down on the soft cloth under bright, diffused light.
- Study the movement through the sapphire caseback with the loupe.
- Find the balance cock and read its engraving.
- Trace the edges of the three-quarter plate for hand-bevelled chamfers and polished sinks.
- Check the chatons, since Lange sets jewels in screwed gold chatons with polished screw heads.
- Compare the balance cock shape and the whiplash spring against reference photos of the same calibre.
- Turn the crown and feel the winding, which should be smooth and even on a real Lange.
- Read the dial printing under magnification and look at letter spacing, serif shape and depth.
- Inspect the hands for polished bevels, correct length and centred alignment over the markers.
- Measure the case with calipers and compare the result to the official dimensions for that reference.
- Match the caseback numbers to the numbers printed on the certificate and the movement.
- Send the serial number to an authorised Lange service point and request written confirmation.
Red Flags That Show Up on Fakes
- Balance cock engraving that looks laser-cut, shallow or machine-perfect
- Gold plating flaking on bridges or a yellow tone over base metal
- Flat, painted blue screws instead of heat-blued steel with polished slots
- Printed dial text with uneven spacing or the wrong font weight
- Caseback serial that does not match the papers or the movement number
- A price far under current market value for that reference
- A seller who refuses close-up movement photos or an in-person inspection
If You Already Bought a Fake
- Stop wearing and winding the watch so the condition stays as received.
- Photograph the watch, the listing, the messages and the packaging.
- Request a written assessment from a qualified watchmaker or a Lange service centre.
- Open a case with your payment provider or card issuer and attach the documents.
- Report the listing to the marketplace and to the platform where the seller operates.
- File a report with your local consumer protection office or customs authority.
Common Questions
Can a fake Lange look correct in photos?
Yes. Dial and case photos are easy to copy from the official site. Always ask for movement shots at an angle, since engraving depth and plate finishing are hard to fake in raking light.
Is a high-end replica worth buying instead?
No. Replica makers copy the outside of the case. The movement architecture, the hand engraving and the finishing standards stay out of reach, and the watch cannot be serviced by Lange.
What single detail settles the question fastest?
The balance cock engraving. On a genuine Lange it is cut by hand, so the floral pattern differs slightly from watch to watch and shows tool marks under a loupe.