Brand Guides / Cartier / Cartier Tank
Reviewed by the Fine Watch Guide team · October 2026
The Tank was designed by Louis Cartier in 1917, its rectangular case inspired by the outline of military tanks, and it has been produced in many variations since.
The Tank is the rectangular dress watch by which others are judged. It comes in many versions, from simple quartz Tank Must models to solid-gold Tank Louis Cartier pieces, and that range determines the care it needs.
Quartz Tanks need batteries, seal checks and occasional movement replacement or service. Mechanical Tanks need regular servicing like any mechanical watch. Leather straps wear and are commonly replaced, and the cabochon crown is easy to damage.
The crown on many Tanks is set with a cabochon, usually a sapphire or synthetic spinel, and it can loosen or fall out over time. Ask the watchmaker to check it during every service. Replacing a lost cabochon with the correct Cartier part keeps the watch looking right.
Identify the version first, because value varies enormously. Check the case metal and markings, the movement and the dial, including the secret signature where present. Gold-plated versions exist and should be priced accordingly.
Vermeil and gold-plated Tanks deserve a close look at the edges of the brancards and the caseback, where plating wears first. Light wear is normal on a watch decades old, but plating worn through to the silver or base metal lowers the value and can't be put back without replating, which collectors usually avoid.
The Tank dates to 1917, when Louis Cartier based its shape on the tanks of the First World War, with the side bars, called brancards, standing in for the treads. The Tank Louis Cartier, from 1922, is the classic version. The Tank Américaine, introduced in 1989, is longer and curved to fit the wrist. The Tank Française, from 1996, has a chunkier case and an integrated bracelet.
The Must de Cartier Tank, launched in 1977, made the design accessible, often in vermeil (gold-plated silver) with a quartz movement. Today's Tank Must continues that role. Knowing which Tank you're looking at helps you judge the right price and the right service.
The brancards, the side bars that frame the dial, are the heart of the Tank's design, and they're easy to soften with heavy polishing. On gold and vermeil models, every polish removes metal, and on vermeil it can wear through the gold plating to the silver beneath. Ask for a gentle clean rather than a full refinish unless the case is badly damaged.
The strap attaches directly between the brancards, and a worn strap puts stress on the spring bars. Replace straps from Cartier or a reputable strap maker, and check the spring bars each time.
Steel Tanks are more forgiving, but the same principle applies: clean the case at each service and polish only when the damage genuinely bothers you. The sharp edges of the brancards are what make a Tank look like a Tank.
Many Tanks are quartz, and battery care is the main maintenance task. Replace the battery promptly when the watch stops; a dead battery left inside can leak and damage the movement. A proper battery change includes new gaskets and a quick pressure test.
If you won't wear a quartz Tank for a long time, ask a watchmaker to remove the battery. It's a simple step that prevents a costly repair later.
Many owners wear a quartz Tank for decades on nothing more than batteries and fresh gaskets, which is part of its charm.
Many vintage Tanks, especially Tank Louis Cartier models, use small manual-wind movements. They're charming and elegant, but they need regular winding and careful servicing. Wind them gently each day, and don't force the crown past the point of resistance.
Vintage manual-wind Tanks should be serviced by a watchmaker who's comfortable with small, delicate movements. Ask about their experience before handing the watch over.
Tanks come in a range of sizes, from small to large, and the right size depends on your wrist and the look you want. Small Tanks are elegant and discreet; larger ones have more presence. The Américaine is longer and curved, while the Française is wider and sits on a bracelet.
Try on several before buying. A Tank that feels right will get worn, and one that doesn't will sit in a drawer.
Think about movement as well as size. Some Tank models are quartz, some automatic and some manual-wind, and the choice changes how much attention the watch needs from you.
Louis Cartier, in 1917.
Both exist. Many modern Tanks are quartz; some are mechanical.
Leather wears with daily use. Replacement is routine.
They're different lines at different price points, often in different materials. Identify the line before you buy.
Cartier Tank owners use Cartier specialists for servicing, authentication and restoration.
Bal Harbour, Miami, FL
Multibrand retailer with Rolex Certified Pre-Owned at Bal Harbour Shops