Short answer
The Tourbograph 510105 copy is a replica of the A. Lange & Söhne Tourbograph "Pour le Mérite," a hand-wound watch that combines a tourbillon, a split-seconds chronograph, and a fusée-and-chain drive. No copy at any price reproduces that movement. What a 510105 listing gives you is the look: a large round case, a busy silver or black dial, an exposed tourbillon cage at 6 o'clock, and pushers on the right flank. Judge the watch as jewelry and check the visible mechanics, not the engraving on the bridge.
Tourbograph 510105 Replica Watch Guide
What the code 510105 actually means
Sellers assign short SKU-style codes to replica references so buyers can order without naming the brand. 510105 is one such code. It does not match any A. Lange & Söhne reference number, and it tells you nothing about which workshop built the piece. Two listings with the same code can come from different factories with different movements. Ask the seller for the movement name, the case diameter, and photos of the actual unit before you send money.
Tourbograph Replica 510.105 Buying Guide: What to Check Before You Buy
Movements you will find
The genuine watch uses a hand-wound calibre with a chain transmission that feeds near-constant torque to the escapement. Copies fall into three groups:
Ultimate Guide to the Tourbograph 510.105 Watch Copy
- Automatic chronograph base with a decorative tourbillon cage that does not rotate or rotates off-axis.
- Hand-wound Seagull ST19 family with a working tourbillon carriage and a standard chronograph, not a split-seconds.
- Higher-tier hand-wound copies with a functioning rattrapante and a tourbillon that keeps time. These cost the most and still differ inside.
Study the subdial at 12 o'clock. On a true split-seconds, the two hands stack and one can be stopped and restarted while the other runs. On most copies both hands move together at all times.
Case and dial checks
The original is platinum and heavy. Copies use steel, plated brass, or tungsten. Heft the watch before buying. Look at the tourbillon aperture: a real cage turns once per minute, so the balance assembly makes one full rotation every 60 seconds. Time it with a phone stopwatch. Confirm the dial printing sits flat under a loupe, the applied numerals have crisp edges, and the hands are not painted.
Inspection steps before you pay
- Ask for a video of the watch running with a stopwatch visible in the same frame.
- Confirm the tourbillon cage completes one turn in 60 seconds.
- Test chronograph start, stop, and reset three times on video.
- Check the split-seconds pusher at 8 o'clock if the listing claims a rattrapante.
- Request close photos of the caseback engraving and the movement under bright light.
- Weigh the watch or ask for a scale photo. Under 90 grams points to a light alloy case.
- Pay with a method that allows a chargeback.
- Inspect the watch on the day it arrives, inside the return window.
Price tiers
Budget copies sit under $150 and often hide a quartz or basic automatic movement behind a fake cage. Mid-tier runs $300 to $700 and gives you a working tourbillon with a standard chronograph. Top-tier copies run $1,200 and up and add a rattrapante plus better hand finishing. None of these hold value, and none can be serviced by the brand.
Legal and practical notes
Counterfeit watches are illegal to import into the United States. US Customs and Border Protection can seize a shipment, and the buyer can face penalties. Copies carry no warranty and no service network, so budget for a local watchmaker on any repair.