The Cartier Tank Solo is the most accessible and widely produced Tank reference in the modern Cartier lineup, designed to bring the iconic rectangular case to the broadest possible audience while preserving the essential Tank design language. Introduced in 2004, the Tank Solo is available in a steel quartz version, a steel automatic, and various gold and two-tone configurations, spanning multiple case sizes including the Small, Regular, and Large designations. The quartz Tank Solo in steel on leather strap is among the most common entry points into pre-owned Cartier ownership, offering the unmistakable Tank silhouette — Roman numerals, blued-steel hands, guilloché crown with synthetic blue cabochon — at a relatively attainable price. The automatic Tank Solo, powered by the caliber 077 or later the caliber 1847 MC, adds mechanical interest and a sapphire caseback to the proposition. Pre-owned Tank Solo references are widely available across dealers and auction platforms, giving buyers considerable choice in condition, size, and configuration. For those entering the Cartier Tank universe for the first time, the Solo provides a faithful rendering of the design's enduring appeal. DeMesy & Co. in Dallas has bought and sold pre-owned Tank Solo references since 1987.