1960s Cartier Tank Brown Leather Watch

An 18 karat yellow gold watch, Cartier, circa 1960s. The Tank watch with Roman numerals on a white dial with cabochon sapphire crown, the mechanical movement signed Cartier, Swiss, adjusted to 3 positions, 18 jewels, case approximately 30 x 23.5 mm on a brown alligator band with deployant clasp. Inner circumference approximately 6 1/4 inches. Signed and numbered.