Quick answer
A fake Lange 1 Tourbillon is a replica of the Lange 1 Tourbillon that A. Lange & Söhne released in 2000. The genuine watch has a platinum case and a production run of 150 pieces. Most replicas fail on one part: the tourbillon. A real tourbillon cage turns one full revolution in 60 seconds and carries the balance wheel inside it. Cheap replicas show a spinning disc or a decorated balance instead.
The genuine watch: baseline facts
- Maker: A. Lange & Söhne, Glashütte, Germany. The Lange 1 line started in 1994.
- Tourbillon model: Lange 1 Tourbillon, 2000, limited to 150 pieces.
- Case: platinum, 38.5 mm, same case as the standard Lange 1.
- Movement: hand-wound, one-minute tourbillon, visible through an aperture at the small seconds position.
- Dial: off-center main dial at the left, outsize date at the top right, power reserve on the right, small seconds at the lower right.
- 2014: a 20-piece Handwerkskunst version followed.
Platinum matters here. Platinum has a density of 21.45 g/cm3. Stainless steel sits at about 7.9 g/cm3. The same case volume in platinum weighs about 2.7 times more.
Test the tourbillon in 60 seconds
- Watch the cage. Mark its start point. Check again after one minute. One turn is correct.
- Look inside the cage. The balance wheel and the escape wheel sit in the cage and travel with it.
- Find the seconds hand. On this model it mounts on the cage.
- Check the motion at low amplitude. A fake disc coasts and stops at random points.
- Ask for a 90-second video with the dial in frame. Photos cannot prove rotation.
Dial and case checks
- Outsize date: two separate discs, one for the tens digit and one for the units digit. Look for an even gap and a thin sans-serif font. Fakes use one disc or heavy print.
- Markers and hands: gold on the genuine watch. Plated brass and chrome on most fakes.
- Engraving: the tourbillon bridge and the balance cock are hand-engraved. Laser etching looks flat and repeats the same pattern on every watch.
- Caseback: sapphire crystal, six screws, hallmarks. Fakes stamp the same marks, so weight is the stronger test.
- Finish: beveled bridge edges, blued screws, no burrs in the screw slots.
Movement types and price bands
Real one-minute tourbillons exist in China. The Seagull ST8000 and the Hangzhou 5000A are two examples. A replica built on one of these movements runs about $600 to $1,500. Replicas at $150 to $400 do not have a tourbillon. They use a fake cage or an open balance. The genuine platinum Lange 1 Tourbillon trades in the six-figure USD range at auction.
Questions for a seller
- Which movement is inside? Get the caliber name and the beat rate.
- How many seconds does the cage take for one turn?
- Is the case platinum, steel, or plated? Ask for the weight in grams.
- Can you send a 90-second video of the running watch?
- What is the return window?
What this guide cannot do
No photo set proves a tourbillon. No listing proves platinum. Production numbers for the 2014 Handwerkskunst model and some auction records differ between sources. Verify the reference number and the movement number with A. Lange & Söhne before you spend money.