1960s womens Cartier tank Louis watch with 18k gold plated watch case, Swiss movement and made in Switzerland. Signed on the back Cartier and reads PLAQUE OR G20 M . Blue gemstone embedded into manual wind knob. Genuine leather Lizard strap in black. Watch case measures 1.25 in. from corner to corner. Currently fits wrist size 6.75 in. to 5.25 in. Not tested for working condition, Made in Switzerland Cartier Watch, Swiss Movement watch, Cartier Tank Louis Ladies Wristwatch, 18k gold plated manual Cartier Tank Ladies Wristwatch, ladies luxury jewelry accessories, cocktail watch, Cartier accessories, Cartier watch, signed Cartier watch, Cartier 18k gold plated watch case, luxury fashion and accessories, ladies luxury wearables, vintage wear, estate wear, 3JA The Tank watch was created by Louis Cartier, who designed it after the tanks of WWI battlefields. Defined by flat vertical brancards and a sapphire cabochon, this symbol of understated elegance has since captivated the worlds most astute minds.