1832–1867

Longines was founded in Saint-Imier in 1832 by Auguste Agassiz, a Swiss watchmaker and brother of biologist Louis Agassiz.^[3][7] Auguste had two partners, lawyers Henri Raiguel and Florian Morel; the company's original name was Raiguel Jeune & Cie.^[8][9] By 1846, Raigeul and Morel had retired from the watch industry, leaving Agassiz as sole company head.^[3]

Several years later, Agassiz brought in his bright, enterprising nephew, trained economist Ernest Francillon, into the business.^[3] Francillon was the mastermind behind several impressive innovations that would distinguish the company from its competitors. One early stroke of genius from Francillon was to solely produce crown-wound pocket watches rather than the prevalent key-wound alternative. Later, when Agassiz started suffering from ill health, he passed leadership to Francillon.

1867–1878

Under Francillon, the company began segueing out of the établissage system and moved towards more modern production methods. Francillon solidified his firm's progression to mass production in 1867 by establishing his first factory.^[3][9] Its location, an area in southern St. Imier known locally as Les Longines ("long meadows"), gave rise to the Longines name. To help further his efforts to improve the production at Longines, Francillon brought on Jacques David, a talented engineer. In addition, Francillon appointed David as Technical Director and put him in charge of the new factory. By 1867, it was also marked the year the Longines factory produced its first in-house watch movement, the 20A. The 20A, built with an anchor escapement (usually employed in pendulum clocks), was wound and set via a pendent crown. The innovative movement won an award at the 1867 Universal Exhibition in Paris.

Several years later, the U.S. watchmaking industry was making strides in industrialized watch manufacturing. Francillon sent Jacques David to the 1876 World's Fair in Philadelphia to gather new ideas and strategies from American watchmakers. Upon returning, David wrote a 108-page report detailing what he learned during his trip; the report is considered one of the most significant documents in watchmaking history, detailing the inner workings of American watch factories, including the entire production process, from raw materials to finished watches, and the highly-effective internal structure and quality control measures implemented in American factories. In his analysis, David concluded the Swiss watchmaking industry needed to change significantly to keep pace with its American competitors.

Longines Serial Number 183 "Attesa" date 1867. On 6 November 2018, Longines announced discovery of serial number 183, dated 23 October 1867, currently the Oldest Longines watch known. Its caliber is an August Agassiz 4 (AA4).

Longines was the world's first watch trademark and the first Swiss company to assemble watches under one roof.^[10]

1878–1927

In 1878, Longines developed its first chronograph movement, the 20H,^[3] a "mono-pusher" chronograph, in which all 3 chronograph functions (start, stop, and reset) were controlled via the crown. With the 20H, Longines could produce stopwatches suitable for precise timing in professional events. This was when Longines began building its reputation in equestrian sports, such as horse racing and jumping.

By 1880, Longines was known for the quality and precision of its timepieces.^[9] To Francillon's dismay, the brand became a target for counterfeiters. Longines counterfeits were not only directly stealing business and revenue from Francillon, but also potentially damaging his company's reputation. Francillon trademarked the Longines name in 1880 and its winged hourglass logo in 1889.^[3] By 1886, Longines had established itself as a primary supplier of timing equipment for most New York sporting officials.

Notable Longines calibers:

• Longines 20H pocket chronograph
• Longines 18.72 pocket chronograph
• Longines 19.73 pocket chronograph

1927–1971

In 1927, P.V.H. Weems collaborated with Longines to produce the first wrist watch, the Weems Avigation watch. The watch was 47 mm in diameter.

In 1931, Longines collaborated with Charles Lindbergh to introduce the Hour Angle aviation watch.

Longines Weems ref 3931 c.1937 US Naval Academy Annapolis Dial

In 1937, P.V.H. Weems again collaborated with Longines to produce a second, smaller (33mm) Weems avigation watch (reference 3930, 3931, and 4036).

In 1953, Longines deployed the first quartz movement.^[11]

In 1954, Longines introduced a timekeeping instrument called Longines Chronocinegines.^[12]

Notable Longines calibers:

• Longines 12.68z time only or wrist watch chronograph
• Longines 13.33z wrist watch chronograph
• Longines 13ZN wrist watch chronograph
• Longines 30CH wrist watch chronograph
• Longines 37.9 time only
  

  Longines Seconds Setting Watch. Sidereal Time ref 4356

1971–present

In 1983, Longines' owner ASUAG merged with SSIH (which owned Omega SA) to form the Société Suisse de Microélectronique et d'Horlogerie (SMH). SMH became The Swatch Group in 1988, and Longines continued without R&D and production activities of its own.^[13] In the 1990's, Swatch differentiated and repositioned its various brands in order to better compete in all market segments, with Omega becoming the high-end brand intended to compete with Rolex and Cartier, while Longines was positioned in a less-expensive segment, its watches redesigned as objects of elegance and classicism, emphasizing the historical tradition of manufacture, as opposed to the craft of watchmaking.^[14] In 2019, Longines licensed its name and branding to Marcolin for a collection of men's and women's optical frames and sunglasses.^[15]

Longines Master Retrograde Small Seconds

Sponsorships

Since Longines developed its first chronograph movement in 1878, the brand has steadily built strong relationships with various sporting organizations, events and teams worldwide. First came horse racing, then additional equestrian sports such as show jumping, endurance riding and eventing (a "triathlon" of dressage, cross-country, jumping).

Today, Longines is designated as official timekeeper, partner, and watch for competitions worldwide including:^[18]

• Formula One World Championship (1980s)
• Archery World Cup
• Commonwealth Games
• French Open
• World Artistic Gymnastics Championships
• FEI Show Jumping World Cup
• FIS Alpine Ski World Cup
• Hong Kong International Races