Short answer
The Lange 1 Time Zone is an A. Lange & Sohne model listed under reference families 116 and 136. The first version came out in 2005 under 116.xxx numbers. The 2020 update uses 136.xxx numbers. I could not confirm 704.035 as a Lange 1 Time Zone reference in manufacturer catalogs. Replica sales pages use the number, which is why people search for it. Confirm any reference number with the maker or an authorized dealer before money changes hands.
Genuine specs
- Hand-wound manufacture calibre. L031.1 from 2005. L141.1 from 2020.
- 72-hour power reserve. Power reserve display marked AUF and AB.
- Case diameter 41.9 mm. Gold or platinum.
- Two time zones. A city ring holds 24 cities.
- Day and night indicator on the second time zone dial.
- Outsize date. The date follows home time.
- 3/4 plate, screwed gold chatons, hand-engraved balance cock.
What replicas change
Replica Lange 1 Time Zone watches copy the dial layout. The parts under the dial differ.
- Movement. Copies use mass-produced movements with a decorative plate screwed over the top. The engraving on the balance cock is stamped, not cut by hand.
- City ring. On a copy the ring may not index to a city, or it turns with the wrong crown. On the genuine watch one crown winds and sets home time, the other sets the second zone, and a corrector at 8 o'clock moves the city ring.
- Outsize date. Copies use two printed discs behind a frame. The jump at midnight does not track home time.
- Case metal. Copies use steel with gold plating. Plating wears at the lugs, crown, and caseback edge.
- Finishing. Anglage, black polish, and perlage differ. Macro photos show flat edges and machine marks.
Legal facts in the United States
Counterfeit watches are illegal to import and to sell. 18 U.S.C. 2320 covers trafficking in counterfeit goods. U.S. Customs and Border Protection seizes counterfeit shipments. Trademark owners such as Richemont, the parent company of A. Lange & Sohne, file enforcement actions. A replica has no manufacturer warranty, no parts support, and no service from the brand. Resale value is near zero.
Checks on a listing
- Reference number. 704.035 sits outside the Time Zone range.
- Price. A Lange 1 Time Zone in gold trades in five figures USD. A four-figure price points to a copy.
- Photographs. Genuine listings show the movement, the balance cock engraving, and the caseback.
- Papers. The guarantee booklet, the serial number on the caseback, and the service record should match.
If a seller cannot show the movement or declines a service record check, treat the listing as a replica.