Short answer

A fake Lange 1 platinum is a replica of the A. Lange & Söhne Lange 1 with a case finished to look like platinum. The genuine watch uses a 950 platinum case, a hand-wound in-house calibre, and a solid silver dial. Most replicas use stainless steel, a rhodium-plated brass movement, and a printed dial. Replica prices run from $300 to $1,200. The genuine watch retails above $55,000. Weight, movement finish, and the date mechanism are the fastest tells.

The genuine reference

A. Lange & Söhne launched the Lange 1 on 24 October 1994 in Dresden. The layout has an off-center main dial, small seconds at 5 o'clock, an outsize date at 1 o'clock, and a power reserve indicator at 3 o'clock. The first generation used caliber L901.0: manual wind, 365 parts, 53 jewels, 21,600 vph, twin mainspring barrels, and 72 hours of power reserve. Case diameter is 38.5 mm. Platinum 950 versions carry a Pt950 hallmark and weigh about twice as much as a steel case of the same size.

What replica versions use

  • Case: 316L or 904L steel, some with rhodium plating to mimic platinum color.
  • Diameter: most measure 38.5 mm to 40 mm, some 42 mm.
  • Movement: Seagull ST19, Miyota 9015, or a decorated automatic, running at 21,600 or 28,800 vph.
  • Power reserve: 38 to 45 hours. The genuine calibre L901.0 holds 72.
  • Dial: brass with printed text. Genuine dials are solid silver with applied gold markers.
  • Caseback: sapphire on the better replicas. Engraving is shallow and machine-cut.

Price ranges

Low-grade replicas sell for $150 to $300. Mid-tier versions with a sapphire caseback sell for $400 to $700. The top tier, listed as "Swiss movement" or "1:1", sells for $800 to $1,200. A used genuine platinum Lange 1 trades between $35,000 and $50,000 on the secondary market. Retail on current platinum references sits in the $55,000 to $75,000 range. Prices follow gold and platinum spot.

Tells on the wrist

  • Weight. A platinum 950 Lange 1 head is above 100 g. A steel replica head is 60 g to 70 g.
  • Movement finish. Genuine Lange movements show Glashütte ribbing, a hand-engraved balance cock, and blued screws. Replicas show uniform plating.
  • Date. The genuine outsize date uses two discs with a cross-jump at midnight. Many replicas jump in one step or sit misaligned.
  • Power reserve hand. The genuine hand moves as the mainspring winds. On many replicas the hand is fixed.
  • Hallmarks. Pt950 marks sit inside the caseback and on the buckle. Replicas seldom match the font or the placement.

Legal status in the US

Selling or importing a counterfeit watch violates federal law. 18 U.S.C. § 2320 makes trafficking in counterfeit goods a crime, with up to 10 years for a first offense. US Customs and Border Protection can seize shipments and destroy them. A. Lange & Söhne holds registered trademarks on the name and the outsize date design. Buying a fake carries civil risk. Reselling one as genuine is fraud.

Checks before buying

Ask for the movement number, service records, and a photo of the watch on a gram scale. Request photos of the caseback engraving under raking light. A platinum Lange 1 shows deep, crisp engraving. Take a candidate to an authorized Lange boutique or a watchmaker with Lange parts access before you pay.