Jean Lassale

Jean Lassale was a Swiss watch company and brand associated with the development of some of the thinnest mechanical watch movements of the 1970s. Its defining technical achievement was the Calibre 1200, a manually wound movement measuring approximately 1.2 mm thick. The movement was developed in the 1970s by Pierre Mathys, a master watchmaker in La Chaux-de-Fonds, with the objective of producing an exceptionally thin mechanical caliber. Mathys drew on an earlier concept associated with Swiss engineer Robert Annen: the use of miniature ball bearings in small-scale horology. Instead of relying on conventional bridge and counter-pivot arrangements, the design used miniature single-race ball bearings to support certain wheel axes in an overhung configuration. This allowed the movement to achieve an unusual combination of mechanical operation and extreme thinness. The company Bouchet-Lassale was founded on October 8, 1976. The Calibre 1200 and its automatic counterpart, Calibre 2000, were presented at the Basel international watch fair in April of that year. The hand-wound Calibre 1200 had a diameter of about 20.4 mm and a thickness of 1.2 mm. It used 14 miniature ball bearings, eleven jewels, a frequency of 21,600 vibrations per hour, and a stated power reserve of approximately 35 hours. The automatic Calibre 2000 was thicker, at approximately 2.08 mm, because of the additional requirements of its self-winding system. Jean Lassale's innovations received substantial recognition at invention exhibitions in Geneva, Brussels, and New York during 1976 and 1977. These awards helped establish the company as a specialist in ultra-thin mechanical watch technology rather than as a broad, mass-market watch manufacturer. Production of the movements took place at the company's factory at 30, rue des Voisins in Geneva. Gold cases were supplied by Ateliers réunis, also based in Geneva. In 1978 and 1979, Bouchet-Lassale entered into a collaboration with Omega through Lemania-Lugrin, both then connected with the SSIH watch group. Lemania-Lugrin manufactured the Calibre 1200 and Calibre 2000, while Omega held a non-exclusive license to produce and sell the movements. The relationship connected Jean Lassale's specialized technology with larger Swiss watchmaking organizations, but it did not prevent the brand from experiencing financial difficulties. In September 1979, Bouchet-Lassale encountered financial problems and stopped production. Later in 1979, Seiko acquired the Jean Lassale brand. The technical documentation and patents were acquired separately by Claude Burkhalter, who subsequently established Nouvelle Lemania in 1982. Nouvelle Lemania continued work related to the technology through successor movements known as the Lemania 1210 and 2010. These were initially supplied exclusively to Piaget while Piaget remained independent; after Piaget came under Cartier control, the exclusivity ended and the movements became available to additional watchmakers, including Vacheron Constantin. At Vacheron Constantin, the related movements were identified as Calibre 1160 and, in automatic form, Calibre 1170. The Jean Lassale corporate entity ultimately disappeared from the Swiss commercial register. Bankruptcy was declared by the Tribunal de Première Instance on June 23, 2003, and Jean Lassale SA was excluded from the Swiss Chamber of Commerce on April 10, 2006. The company's last reported chief executive was Hagiwara Yasunori. The brand is therefore best understood as a defunct Swiss specialist watch marque whose principal historical importance lies in its ultra-thin mechanical movement technology and the subsequent influence of that technology on later Swiss movement production.

Jean Lassale emerged from Swiss watchmaking's 1970s pursuit of thinner mechanical movements. Pierre Mathys, a master watchmaker based in La Chaux-de-Fonds, designed a movement intended to become one of the thinnest mechanical calibers ever made. The construction drew on the use of miniature ball bearings in horology, an approach associated with earlier work by Robert Annen. By using miniature bearings to support wheel axes and reducing reliance on conventional bridges and counter-pivots, the design achieved an exceptionally compact architecture. The resulting Calibre 1200 was a manually wound movement approximately 1.2 mm thick and 20.4 mm in diameter. Its design incorporated 14 miniature ball bearings, each using balls approximately 0.20 mm in diameter. It operated at 21,600 vibrations per hour and provided a stated power reserve of around 35 hours. An automatic derivative, Calibre 2000, measured approximately 2.08 mm thick. Both calibers were presented at the Basel international watch fair in April 1976. Bouchet-Lassale was founded on October 8, 1976. The company built a Geneva factory at 30, rue des Voisins, where the 1200 and 2000 movements were produced from 1976 to 1979. Cases in gold were supplied by Ateliers réunis in Geneva. The company received awards at the 1976 Salon International des Inventions et des techniques nouvelles in Geneva, including a gold medal and several institutional prizes. It also received a jury grand prix and gold medal in Brussels in December 1976, followed by gold, honor, and merit awards at an inventors' exhibition in New York on March 4, 1977. The company pursued industrial cooperation with established Swiss watchmakers. During 1978–79, Bouchet-Lassale worked with Omega through Lemania-Lugrin, a component and movement company associated with the SSIH group. Lemania-Lugrin manufactured the Calibre 1200 and 2000, while Omega held a non-exclusive license covering their production and sale. Despite this cooperation and the technical distinction of the movements, Bouchet-Lassale encountered financial difficulties in September 1979 and production ceased. The brand and the technology then followed separate paths. Seiko acquired the Jean Lassale brand in 1979. Claude Burkhalter acquired the technical documents and patents and founded Nouvelle Lemania in 1982, continuing related development through the Lemania 1210 and 2010 movements. Those movements were initially supplied exclusively to Piaget while Piaget remained independent. After Piaget came under Cartier's control, the exclusivity ended and Nouvelle Lemania could sell the movements to other watch companies, including Vacheron Constantin. Vacheron Constantin used related movements under the designations 1160 and 1170 for the automatic version. The original company later ceased to exist as a Swiss commercial entity. Bankruptcy was declared on June 23, 2003, and Jean Lassale SA was removed from the Swiss Chamber of Commerce on April 10, 2006. The last reported chief executive was Hagiwara Yasunori. Jean Lassale's lasting significance is consequently technological: its brief commercial history produced a landmark ultra-thin movement concept and contributed engineering ideas and successor calibers to later high-end Swiss watchmaking.

• 2006

  Commercial registration removed

  [1]Jean Lassaleen.wikipedia.org

  Jean Lassale SA was excluded from the Swiss Chamber of Commerce.

• 2003

  Bankruptcy declared

  [1]Jean Lassaleen.wikipedia.org

  Jean Lassale SA was declared bankrupt by the Tribunal de Première Instance.

• 1982

  Nouvelle Lemania established

  [1]Jean Lassaleen.wikipedia.org

  Claude Burkhalter founded Nouvelle Lemania, which continued work related to the Jean Lassale movement technology.

• 1979

  Production discontinued

  [1]Jean Lassaleen.wikipedia.org

  Production stopped after Bouchet-Lassale encountered financial difficulties.

• 1979

  Brand acquired by Seiko

  [1]Jean Lassaleen.wikipedia.org

  Seiko acquired the Jean Lassale brand, while technical documents and patents were transferred separately.

• 1977

  New York invention awards

  [1]Jean Lassaleen.wikipedia.org

  The company's technology received gold, honor, and merit awards at an international inventors' exhibition in New York.

• 1976

  Calibre 1200 and 2000 presented at Basel

  [1]Jean Lassaleen.wikipedia.org

  The manually wound Calibre 1200 and automatic Calibre 2000 were presented at the Basel international watch fair.

• 1976

  Bouchet-Lassale founded

  [1]Jean Lassaleen.wikipedia.org

  The company Bouchet-Lassale was founded on October 8, 1976.

A specialist Swiss haute-horlogerie and precision-engineering brand positioned around extreme thinness, mechanical innovation, and technically distinctive watch movements.

• Hand-wound mechanical watch movement · 1976

  Calibre 1200

  The Calibre 1200 was Jean Lassale's signature manually wound movement. It measured approximately 1.2 mm thick and 20.4 mm in diameter, making it an extreme example of mechanical miniaturization for its period. Its architecture used 14 miniature ball bearings to support components in place of some conventional bridge and pivot arrangements. The movement operated at 21,600 vibrations per hour, used eleven jewels, and had a stated power reserve of about 35 hours. It was produced from 1976 to 1979.

• Automatic mechanical watch movement · 1976

  Calibre 2000

  The Calibre 2000 was the automatic counterpart to the hand-wound Calibre 1200. Its self-winding mechanism required additional construction and resulted in a thickness of approximately 2.08 mm. Like the 1200, it represented Jean Lassale's focus on reducing the dimensions of a fully mechanical movement while retaining practical wristwatch functionality. It was presented in 1976 and produced during the company's short manufacturing period before production ceased in 1979.

• Successor mechanical watch movement · 1982

  Lemania 1210

  The Lemania 1210 was developed by Nouvelle Lemania after Claude Burkhalter acquired technical documentation and patents associated with the Jean Lassale technology. It was described as a successor to the Calibre 1200. The movement was initially supplied exclusively to Piaget while Piaget remained independent, and later became available to additional watch companies after that exclusivity ended.

• Successor automatic watch movement · 1982

  Lemania 2010

  The Lemania 2010 was the automatic successor associated with the Calibre 2000 and was produced by Nouvelle Lemania after its establishment in 1982. It continued the ultra-thin movement lineage developed around Jean Lassale's original engineering work. Related movements were supplied first to Piaget and subsequently to other high-end watch companies.

• 1982

  Develop successor calibersGeneration change

  Background

  The original Calibre 1200 and 2000 technology required a continuing industrial platform after the end of Bouchet-Lassale production.

  Action taken

  Nouvelle Lemania produced the related successor movements 1210 and 2010.

  Aftermath

  The successor movements were initially exclusive to Piaget and later became available to other watchmakers, including Vacheron Constantin.

  Source

• 1979

  Separate brand and technology transfersM&A

  Background

  After production stopped and the company faced financial difficulty, the Jean Lassale brand and the underlying technical assets were separated.

  Action taken

  Seiko acquired the Jean Lassale brand, while Claude Burkhalter acquired technical documents and patents and later established Nouvelle Lemania.

  Aftermath

  Nouvelle Lemania developed successor calibers, while the Jean Lassale corporate entity eventually entered bankruptcy and disappeared from the Swiss commercial register.

  Source

• 1978

  Partner with Omega through Lemania-LugrinStrategy

  Background

  Bouchet-Lassale sought industrial support and broader commercial reach for its technically demanding ultra-thin movements.

  Action taken

  The company collaborated with Lemania-Lugrin, which manufactured the Calibre 1200 and 2000, while Omega received a non-exclusive production and sales license.

  Aftermath

  The partnership connected the technology with the SSIH group, but production ended in 1979 after Bouchet-Lassale experienced financial difficulties.

  Source

1. 1Jean Lassaleen.wikipedia.org