Short answer
No A. Lange & Söhne catalog lists a watch called Lange 2. The Glashütte maker sells the Lange 1, the Lange 1 Perpetual Calendar, and the Langematik Perpetual. The phrase "Lange 2 Perpetual 725.038" comes from replica listings. Treat it as a seller label, not a factory reference.
Reference numbers from Lange
A. Lange & Söhne writes references as three digits, a dot, then three digits. The first group maps to a model family. The Langematik Perpetual sits in the 310 group. Public catalogs, auction archives, and dealer listings do not tie the 725 group to a perpetual calendar. A buyer who searches 725.038 finds replica shops and no manufacturer page.
What a perpetual calendar does
A perpetual calendar tracks month lengths, the 28 or 29 day February, and the four year leap cycle. The owner sets the watch once and leaves it. A true mechanism needs a program wheel, a month cam, and a leap year star. Those parts add height to the movement.
How replica versions differ
Most replica watches sold as perpetual calendars use one of three builds.
- An automatic base movement plus a calendar module bolted on top. The watch grows in thickness.
- A base movement with decorative month and leap year discs. The discs move but do not control the date.
- A complete calendar with a 31 day cycle. February must be corrected by hand each year.
Check the leap year window. On a working mechanism the indicator advances one step every four years. On many replicas it moves each year or stays fixed.
Points to verify
- Case diameter and thickness in millimeters. Compare both numbers to the genuine model.
- Subdial positions and hand lengths.
- Crown position and the number of correctors on the case flank.
- Movement photos, not stock renderings.
- Return terms in writing.
- Seller identity: company name, address, payment method.
Movement photos are the hard part. A closed caseback hides everything. Sellers who refuse movement images are a data point.
Price ranges
Replica perpetual calendar watches from Chinese factories sell for about $300 to $1,500. Genuine A. Lange & Söhne perpetual calendars trade on the secondary market for about $70,000 to $150,000. That gap is a fact about the two products.
Legal status in the United States
Trafficking in counterfeit goods is a federal crime under 18 U.S.C. § 2320. A first offense carries up to 10 years in prison. A second offense carries up to 20 years. Under 19 U.S.C. § 1526, Customs can seize and destroy counterfeit imports and assess a civil penalty up to the value of the goods. Trademark owners can also sue in civil court.
What cannot be confirmed
No factory publishes output numbers for replica watches. Serial numbers in listings have no registry. Case metal content and movement origin cannot be checked from a photo. Any claim about a specific unit rests on the seller.