A fake 1815 Moon Phase is a replica of the A. Lange & Söhne 1815 Moon Phase, a hand-wound dress watch whose moon-phase disc turns inside the small seconds subdial at 6 o'clock. Genuine examples (reference 212.050 and its siblings) measure roughly 36 mm, use calibre L943.1, and hold the lunar display to a one-day deviation in 122.6 years. Replicas run from crude quartz pieces with a frozen moon disc to high-grade first copy builds that copy the dial but still miss the movement.
What is the A. Lange & Söhne 1815 Moon Phase?
It is a manually wound watch from the 1815 line, built in small batches during the 2000s and long out of production. Case metals include yellow gold, white gold and platinum, with Lange's proprietary honey gold on selected variants. The moon aperture and the running seconds share one display, which is the detail most fakes get wrong.
How do you spot a fake 1815 Moon Phase?
- Moon disc motion: the real disc advances continuously with the gear train, while many fakes jump once a day or sit frozen.
- Metal: honey gold is an alloy Lange does not supply to outsiders, so any honey gold replica is plated brass or steel.
- Caseback: a hand-engraved balance cock, gold chatons and blued screws are the first things cheap fakes drop.
- Dial text: genuine dials read Made in Germany, while low-grade fakes print Swiss Made or misspell the brand.
- Thickness: replicas often run 1 mm to 2 mm thicker to swallow an off-the-shelf movement.
Does a replicated moon phase actually work?
Some do and most do not. A working replica uses a 59-tooth moon disc driven off the hour wheel, a standard design that drifts about one day every three years. Cheaper builds glue a printed disc to the dial or wire it to a quartz calendar that steps once a day.
What does first copy mean for a 1815 Moon Phase replica?
In the replica trade, first copy means the top grade: correct case proportions, sapphire crystal, a decorated clone movement and a moon phase that moves. It is still not a Lange. The engraved cock, the gold chatons and the 122.6-year moon gearing are not reproduced at that price.
What should you check before buying one?
- Ask for a video of the moon disc advancing across 24 hours.
- Confirm the movement type, hand-wound clone or quartz.
- Compare case diameter and lug width against published Lange specs.
- Check the shape of the moon aperture and the sub-seconds hand position against real photos.
How much do fake and genuine versions cost?
Genuine 1815 Moon Phase watches trade in the high five figures at auction, depending on metal and condition. Replica versions sell from under $100 for quartz pieces to several hundred dollars for a first copy with a working moon phase. That gap explains why the fakes exist and why the tells matter.