Case material: Yellow gold; Charge: Automatic; Conditions: Never worn Year : 2014; Presentation condition : With dealer guarantee ; Model: Tank Price on request Gmtbroker Reference: W5310018 The Tank watch was created in 1917 as WWI raged, and presented in peacetime as a gift to General John Pershing, its clean, crisp lines said to resemble the structure of its military namesake. Its lines and proportions are similar to those of tanks found on First World War battlefields; it is both a square and a rectangle, and its strap is seamlessly integrated into vertical sidebars called "brancards".