The Cartier Tank Louis is one of the most elegant and iconic watch designs in horological history. Introduced in 1922 and named after Louis Cartier, it drew inspiration from the shape of World War I Renault tanks. The Tank Louis features a rectangular case with softly rounded outer edges, a clean dial with Roman numerals, a railroad minute track, Cartier’s signature blued steel hands, and a crown topped with the brand’s iconic sapphire cabochon. The Tank Louis exudes understated luxury with a timeless and classic design.
The Tank Louis Cartier is the most well-known design in the Tank line. It evolved from the original 1917 Tank Normale with several refined changes. The squared and sharper edges of the Normale were softened into elegant rounded case sides, making the Tank Louis a more delicate and refined design. It also transitioned from the square dial of the Normale to a rectangular layout, establishing an aesthetic that would define the classic Tank silhouette.
Culturally, the Tank Louis has become a symbol of refined taste. It has been worn by some of the most influential figures of the 20th century, including Jackie Kennedy, Andy Warhol, and Muhammad Ali.
Over the years, the Tank Louis Cartier has been offered with a range of movements, including manual-wind, automatic, and quartz. However, for purists, the manually wound versions are considered the most true to the original. Many references feature guilloché dial centers, which enhance the watch’s visual depth and elegance. The case is always crafted in precious metals, typically yellow gold, rose gold, or platinum, and is distinguished by its rounded edges and cabochon-set crown.
Originally, the Tank Louis was offered in two sizes, determined by movement diameter: the 8-ligne and 9-ligne versions. The 8-ligne model measured 28 millimeters in height by 20 millimeters in width, while the 9-ligne version measured 30 millimeters by 23 millimeters. Both were produced in yellow gold or platinum and remained in production for over four decades. In the mid-’70s, Cartier also introduced the Tank Automatique “Jumbo XL” ref. 17002, a larger Tank Louis with an automatic movement measured at 28 millimeters by 35 millimeters.
Today, Cartier offers Tank Louis Cartier variations in a large version measuring 33.7 millimeters by 25.5 millimeters, and small version measuring 29.5 millimeters by 22 millimeters.
In a world increasingly dominated by large sport watches, the Cartier Tank Louis stands apart. Its subtle elegance, historical significance, and timeless design make it a horological icon and one of Cartier’s most important designs.


