The short answer
A replica 1815 398.032 is a copy of an A. Lange & Söhne 1815, the hand-wound dress watch line Lange introduced in 1994 and named for Ferdinand Adolph Lange's birth year. The 398.032 portion is Lange's reference code for one exact configuration: case metal, dial, and whether the watch carries a complication. If you are shopping for the copy, here is the honest version. The case and dial can look convincing from a few feet away. The movement never will. Spend accordingly.
What the real thing is
The 1815 is Lange's most traditional design. Arabic numerals, a railway-track minute scale, blued steel hands, small seconds at six, and a hand-wound movement behind a sapphire back. Current versions measure about 38.5 mm across and sit under 9 mm thick, thin enough to slide under a shirt cuff. Earlier references in the family are smaller, sometimes 36 mm. Cases are gold or platinum, never steel.
Inside you get a three-quarter plate, Glashütte ribbing, blued screws, gold chatons, and a balance cock engraved by hand, so no two are identical. That last detail matters here. No replica has reproduced it.
How close the copies get
Case and crystal
Most decent copies nail the diameter and the lug shape. Thickness is where they slip. Plated brass and stainless cases typically add 1 to 2 mm, and on a thin dress watch that extra bulk shows in profile. Look for sapphire with anti-reflective coating on both sides. Mineral glass and a single coating are the common cost cuts.
Dial and hands
Print quality is the fastest tell. Genuine dial printing looks crisp and slightly raised under a loupe. Copy printing looks flat, and the railway track reads gray instead of black. Hands matter too. Flame-blued steel has a deep, shifting blue that changes with the light. Painted blue looks like paint, especially outdoors.
Movement
This is the part no replica solves. You will find quartz, a generic automatic, or a decorated hand-wound clone. Some sellers hide an automatic behind a fake plate. Ask for movement photos and a short clip with the balance running and the crown being wound.
Tells worth memorizing
- Case weight. Gold has heft; plated steel does not, even when the color is close.
- Balance cock engraving, which should be hand-cut, deep, and slightly uneven.
- Dial text. Font weight and letter spacing, including the country of origin line.
- Crown action, which should feel precise on a hand-wound movement, not gritty.
- Lug finishing. Sharp inner edges turn up on copies more than anywhere else.
What I would check before paying
- Ask for video, not stills. Movement, seconds hand sweep, crown winding.
- Confirm case material and plating thickness in writing.
- Read the return window and whether a dead movement is covered.
- Compare the stated thickness against the genuine spec you looked up yourself.
- Set a spending ceiling before you browse, because grading language inflates fast.
Price reality
Good copies in this style run roughly $250 to $500. Under $150 you are buying quartz or a disposable build. Past $600 you are paying for a description, not a better watch. Keep the wider gap in mind as well. A genuine 1815 in gold costs more than most people's car, so a $300 copy is a costume piece. That is fine. Just know that is what it is, and judge the seller on whether they admit it.