Cartier Cintrée Paris from 1960s

Cartier Tank Cintrée “Paris” from the late 1960s, featuring a curved rectangular case in 18k yellow gold measuring 36 × 20 mm. The case is stamped with the SCA maker’s mark, consistent with Cartier Paris production of the period.
The curved white enamel dial displays black Roman numerals and railway track minute markers, fitted with blued steel hands.
It is powered by a manual-winding mechanical movement with 18 jewels, manufactured by Jaeger-LeCoultre for Cartier and signed Cartier.
The watch is fitted with a leather strap and a Cartier gold deployant clasp, bearing the EJ maker’s mark. It is preserved in excellent overall condition, with an intact dial.