Short answer
A fake Saxonia 202.026 usually looks fine on a wrist and falls apart on a bench. The tell is almost never the dial. It is the movement, the caseback engraving, and the paperwork. If you only get one look at the watch, spend it through the sapphire caseback, then ask for a photo of the movement and the serial number together in the same frame.
Start with the reference itself
Lange reference numbers are not random. The digits encode a model family and a specific metal and dial combination. Sellers who fake these watches tend to mix parts: a Saxonia dial, a case from something else, and a certificate bought separately. Ask the seller to read the caseback aloud on video. If the reference on the caseback, the reference on the certificate, and the reference in the listing do not match, stop there. You do not need a loupe for that check.
The movement is where copies fail
This is the part that cannot be faked at a profit. A genuine Lange caliber has a three-quarter plate in untreated German silver, a soft alloy with a warm grey tone that dulls over time. A copy will show rhodium-plated brass that stays bright and cold, or a plate finished with perlage when it should carry Glashutte ribbing. Look for screwed gold chatons around the jewels, thermally blued screws with a deep even blue rather than painted heads, and a balance cock engraved by hand. Every Lange engraver cuts a slightly different floral pattern, so the line work should look cut, not stamped or laser etched. If the watch is automatic, the rotor should be gold or platinum.
Wind it. The crown should move with a smooth, dense resistance and no grinding. A cheap clone movement feels hollow and rattles when the rotor swings.
Case, dial, and hands
The Saxonia is a plain round dress watch, which is exactly why it gets copied. The details that survive scrutiny are small. Applied gold baton markers should sit flush and catch light uniformly. The signature under 12 should read A. Lange & Sohne with the Glashutte location, printed cleanly with even spacing. Hands should be solid gold with sharp polished bevels, not thin stamped steel. On the caseback, German gold carries the crown and sun hallmark with a fineness stamp, and the engraving of the reference and serial should be crisp and consistent with the rest of the case. Look at the lugs from the side. Copies almost always have softer edges and a thicker profile.
Papers, box, and history
Ask for the original box, the numbered certificate, and any service documents. Then ask for the movement photo again, this time with the serial clearly readable. A seller with nothing to hide will send it. A seller with something to hide will send a stock image or go quiet.
Red flags worth walking away from
- Price far below the going rate for the reference, with a story attached to explain it.
- Caseback engraving that is shallow, uneven, or in the wrong font.
- Movement photos that are blurry, borrowed, or cropped to hide the balance cock.
- Serial on the case that does not match the one on the certificate.
- A seller who refuses a third-party inspection or a meeting at a watchmaker.
How to confirm it properly
Lange can be asked for information about a specific serial through its archive service, and an authorized dealer can send the watch in for a service estimate. A watchmaker who works on Glashutte movements will also spot a fake in minutes once the caseback comes off. If you are buying remotely, make the inspection a condition of the sale in writing before money moves.