Cartier. A fine and rare large 18k gold rectangular curved wristwatch

Cartier. A fine and rare large 18k gold rectangular curved wristwatch
Signed Cartier, Paris, Tank Cintree model, case numbered 034841 and 65045, circa 1970
Cal. 76/1 mechanical movement, 17 jewels, white painted dial, black Roman numerals, inner railway minute divisions, large rectangular curved case, curved back secured by four screws in the band, sapphire-set crown, case, dial and movement signed
23 mm. wide and 45.5 mm. overall lenght