Short answer
We did not find reference 398.032 in A. Lange & Sohne published model catalog. The 1815 is a Lange line built in Glashutte, Germany. A listing that labels a watch "1815 398.032" uses a number you cannot confirm from the maker. Ask for the case serial, the caliber number, and a photo of the movement before any payment.
The 1815 family
Lange introduced the 1815 in 1995. The name marks the birth year of Ferdinand Adolph Lange. The line has held the 1815, the 1815 Up/Down, and the 1815 Chronograph. Case metals include yellow gold, pink gold, white gold, and platinum. Dials run from silver to black to blue, and the sub-dial layout changes between versions.
How Lange reference numbers work
A Lange reference is six digits split as three and three, written with a period, as in 235.032 or 402.032. The digits name a model family plus one fixed case and dial set. Lange does not publish a decode table for the digits. Two watches with the same family name can differ in metal, dial, and movement, so one number fits one watch only.
Checks for any 1815
- Measure the case with calipers. Compare the figures to the catalog entry for that reference.
- Read the caliber number on the movement bridge.
- Inspect the balance cock. Lange puts hand engraving on each movement.
- Check the case back for a gold hallmark and a case serial.
- Match the case serial to the number on the certificate.
Red flags in a listing
- A price far under the used range for the stated metal.
- Stock photos with no image of the movement.
- A reference number with no record from the maker or from auction archives.
- A seller who declines a serial check.
- A certificate with a blank field or a number that does not match the case.
Verification steps
- Request the case serial and the caliber number in writing.
- Request photos of the movement, the case back, and the certificate.
- Send the serial to Lange in Glashutte and ask for a production record.
- Take the watch to an independent watchmaker for a movement inspection.
- Pay through a method that carries a return window.
Cost of a mistake
A gold Lange case holds a set mass of gold. A plated case weighs less. A replica movement will not carry the Lange engraving, the screwed gold chatons, or the finishing seen under a loupe. Service centers refuse work on replicas. Resale value for a replica sits near zero.
What is not known
Lange does not release figures on counterfeit volume. The count of replica 1815 watches in trade is unknown. No source we checked ties reference 398.032 to a real Lange product.