Answer first

A. Lange & Söhne has no product line named Lange 2. Reference 725.038 does not match any A. Lange & Söhne perpetual calendar in the maker's public catalog. The three perpetual families are the Lange 1 Perpetual Calendar, the Langematik Perpetual, and the Datograph Perpetual. Their reference numbers begin with 345, 310, and 410. A listing that combines "Lange 2" with 725.038 is using invented or copied numbers. Ask the seller for the true reference before payment.

What the genuine watches are

Each model runs an in-house mechanical movement with a perpetual calendar module. The display covers day, date, month, moon phase, and leap year. Lange 1 Perpetual Calendar: 41.9 mm case, self-winding calibre L021.3. Langematik Perpetual: 38.5 mm case. Datograph Perpetual: 41 mm case with a chronograph. Case metals are 18k gold or platinum. Retail on these models starts above USD 100,000.

Movements used in replica perpetual calendars

Replica perpetual calendars seldom clone a Lange movement. Three builds dominate the market:

  • Asian 2824 or 2836 with a bolt-on calendar plate. Thin case profile. The calendar plate is the first part to fail.
  • Asian 7750 with added calendar wheels. Thicker case, often 14 mm to 15 mm.
  • Custom hand-wound movement with engraved bridges. Sold at the top of the replica market.

None of these carry a true perpetual calendar program. A real perpetual calendar holds a mechanical memory of 1461 days. Replica modules run a 12-month wheel and need correction at the end of February.

Checks before purchase

  1. Ask for video of the date change at month end. A working module advances from the 31st to the 1st in one step.
  2. Set the watch past February 28. A perpetual calendar jumps to March 1 in a common year and to February 29 in a leap year.
  3. Measure the case. Genuine Lange perpetual cases measure 38.5 mm to 41.9 mm. Copies at 44 mm and above do not match.
  4. Weigh the watch. An 18k gold case in this size is heavy. Plated brass is light.
  5. Inspect the balance cock engraving. Lange cuts deep by hand. Replica engraving is shallow and repeats across units.
  6. Compare the caseback number, the movement number, and the card. All three should agree.

Price bands

Replica perpetual Langes sell for USD 200 to USD 900. Top-tier builds with a gold case and an engraved movement sell for USD 1,200 to USD 2,500. Genuine secondary market prices sit between USD 95,000 and USD 200,000 depending on model and metal. A piece labeled 725.038 at USD 4,000 is either a mislabeled mid-tier replica or a scam.

Legal position in the United States

Counterfeit watches are illegal to import into the United States. U.S. Customs and Border Protection can seize shipments. Trademark holders can file civil claims against sellers. A. Lange & Söhne does not service counterfeit watches. Independent watchmakers do not stock parts for cloned calendar modules. Treat the purchase as unsupported.

Bottom line

The phrase "replica lange 2 perpetual 725.038" points to a model and reference that A. Lange & Söhne does not publish. Ask for the true reference, photos of the movement, and video of the calendar change. If the seller cannot supply all three, walk away.