Cartier "Tank Americaine" White Gold Watch

An 18 karat white gold watch, Cartier. The “Tank Americaine” watch has black Roman numerals with a secret signature at 7, with quartz movement, the case measuring approximately 19 x 35 mm, completed by a modified brickwork bracelet with deployant clasp. Inner circumference approximately 6 inches. Gross weight approximately 79.90 grams. Signed and numbered.