An absolute classic: the Cartier Tank is one of those watches that needs no introduction.

Created from one of the most iconic designs in watchmaking, it has spanned generations while preserving its elegance, proportions, and instantly recognizable identity.

Launched in the late 1970s, Cartier's Must line brought the iconic Tank design to a wider audience without sacrificing the sophistication that made Cartier the ultimate benchmark. Among its countless variations, few have as much personality as this rare "Tortoiseshell Brown Dial," with its lacquered dial in a deep shade of brown. On this example, the natural aging of the lacquer has created the fascinating "Spider" effect, formed by delicate fissures that lend texture, depth, and an absolutely unique character to the dial.

Its condition is another major highlight. The Plaquet G20M (vermeil) case—a gold-over-silver coating used by Cartier at the time—is exceptionally well preserved. The gold sword-shaped hands, the traditional crown with a dark blue cabochon, and the hand-wound 78-1 caliber complete a genuinely vintage and extremely refined set.

Another important distinction is the GM (Grand Modèle) configuration, rather than the more common PM (Petit Modèle). Measuring 23.5 x 30 mm, it offers a greater presence on the wrist without compromising the Tank's classic proportions and signature elegance.

To complete the set, it comes with the original Cartier box and original Cartier-signed strap, forming a set that is increasingly difficult to find in this condition.