Companies

Laco

A Pforzheim watchmaker that grew out of Lacher & Co., one of the five makers of the German air force’s observation watch in the Second World War. Its range is built mostly around pilot’s watches on that wartime pattern.

Founded 1925, Pforzheim, Germany

A time line of Laco from 1925 to today. Based in: Pforzheim from 1925. Owned by: Ludwig Hummel and partners from 1925 to 1959. Dots mark the key dates.
Where Laco has been based and who has owned it, from 1925 to today. The dots are its key dates.1, 2, 4, 5, 6

Swiss movements, then its own

The name joins the opening syllables of Lacher and Co. The partners began by fitting Swiss movements into German cases of their own design. To make Pforzheim less dependent on Swiss suppliers, Ludwig Hummel set up Durowe (Deutsche Uhren-Rohwerke) in 1933, which made movements for Laco and sold them to other German makers.2, 5, 6

During the Second World War Laco was one of five suppliers of the large observation watch, or B-Uhr, to the German air force, alongside A. Lange & Söhne, Stowa, Wempe and IWC Schaffhausen. The military fixed the design; Laco’s versions ran on Durowe’s hand-wound D5 calibre.1, 2, 3, 6

Rebuilding, Timex and quartz

Pforzheim was largely destroyed in 1945, but Laco kept making and selling watches, and production grew during the rebuilding. In 1952 the Laco Sport carried Durowe’s automatic calibre 552, the Duromat; in 1961 the Laco Electric ran on a Durowe movement with an electrically driven balance. Laco says it was the first working electronic wristwatch made in Germany.1, 2, 6

In 1959 Hummel sold Laco and Durowe to the American Timex group. When cheap, accurate Japanese quartz watches took over in the 1970s, Laco lost ground. A sister firm, the Erich Lacher Uhrenfabrik, kept producing throughout, and in 1988 its managing partner, Horst Günther, bought the rights to the Laco name; the new Laco Uhrenmanufaktur GmbH worked mainly on private-label watches.2, 5, 6

A round steel watch movement seen from the back, with a bridge stamped LACO, a jewelled balance and a pale translucent disc at the upper right.
Wristwatch movement calibre Laco 861, equal to Timex M67, Lacher, Pforzheim, about 1962.7 Photograph: Deutsches Uhrenmuseum Furtwangen. Original at Deutsches Uhrenmuseum Furtwangen (opens in a new tab); CC BY-SA 4.0 (opens in a new tab). Adapted; shared alike.

Back to the pilot’s watch

In 2000 Laco returned to its own past with a limited series of recreated wartime pilot’s watches at the original 55 mm, with Durowe movements. Most of its watches now follow the two wartime dial patterns, Baumuster A and B, named after German cities with airports and fitted mainly with Swiss Sellita movements, or Japanese Miyota movements on cheaper models.1, 2, 5, 6

Its newest pilot’s watches are certified to DIN 8330, the German pilot’s-watch standard: sixteen tests in three groups, some carried out by the aerospace engineering department of FH Aachen University of Applied Sciences.8

Key dates

  1. 1925

    Lacher & Co. is founded in Pforzheim.1, 2, 6

  2. 1933

    Ludwig Hummel founds the movement maker Durowe in Pforzheim.2, 5, 6

  3. 1952

    The Laco Sport, with Durowe’s automatic Duromat calibre.2, 6

  4. 1959

    Hummel sells Laco and Durowe to Timex.5, 6

  5. 1961

    The Laco Electric.2, 6

  6. 1988

    Horst Günther buys the rights to the Laco name.2, 5, 6

  7. 2000

    A limited series of recreated wartime pilot’s watches.1, 5, 6

Where Laco leads

  • Made, SpecificationThe B-Uhr

    Lacher & Co. built observation watches on Durowe movements.1, 9

  • Based in, PlacePforzheim

    Laco has been in Pforzheim since Lacher & Co. was founded there in 1925, and grew up alongside the Pforzheim movement maker Durowe.1, 6

  • Part of, TraditionPilot’s watches

    Laco built observation watches for the German air force in the Second World War, and pilot’s watches now make up most of its range.1, 3, 6

  • See also, HistoryJapan builds a watch industry

    Japanese Wikipedia says Takano of Nagoya made Laco-branded watches from 1954.10

  • See also, CompanyA. Lange & Söhne

    Monochrome describes Laco and Lange as the two observation-watch makers with German movements of their own.3

  • See also, CompanySinn

    Sinn says it initiated TESTAF, the scheme on which DIN 8330 is based; Laco says its current pilot’s watches are certified to DIN 8330.8, 11, 12

  • See also, CompanyStowa

    The two Pforzheim firms were among the five makers of the wartime observation watch, and both make watches on its pattern today.1, 3, 13

Elsewhere in Watch Vault

Facts and sources

Founded
19251, 2, 6
Founders
Frieda Lacher and Ludwig Hummel5, 6
Founded in
Pforzheim, Germany1, 6
Based in
Pforzheim, Germany2, 4
Official site
laco.de (opens in a new tab)4

Sources

  1. 1

    History (opens in a new tab), Laco Uhrenmanufaktur, official

  2. 2

    5 Fakten über Laco (opens in a new tab), WatchTime (Germany), independent

  3. 3

    The History of the Pilot Watch Part Five: B-Uhr (opens in a new tab), Monochrome Watches, independent

  4. 4

    Imprint (opens in a new tab), Laco Uhrenmanufaktur, official

  5. 5

    Laco Watch Company: A Brand Highlight with a Family Perspective (opens in a new tab), Worn & Wound, independent

  6. 6

    Laco Uhrenmanufaktur (opens in a new tab), Wikipedia, independent

  7. 7

    Wristwatch movement calibre Laco 861, equal to Timex M67, Lacher, Pforzheim, about 1962. (opens in a new tab), Deutsches Uhrenmuseum Furtwangen, public record

  8. 8

    Pilot watches DIN 8330 (opens in a new tab), Laco Uhrenmanufaktur, official

  9. 9

    Military Watches of the World: Germany Part 1 (opens in a new tab), Worn & Wound (Oren Hartov, 7 December 2018), independent

  10. 10

    タカノ (時計) (opens in a new tab), Wikipedia (Japanese), independent

  11. 11

    Technology glossary (opens in a new tab), Sinn Spezialuhren, official, archived copy

  12. 12

    About us: the company's history (opens in a new tab), Sinn Spezialuhren, official, archived copy

  13. 13

    History of STOWA pilot watches (opens in a new tab), Stowa (Tempus Arte GmbH & Co. KG), official

Sources read November 11, 2026.