A Cartier Tank LC, Paris, Circa 1967, made in France but likely sold in New York. Movement by Jaeger Le Coultre, Calibre 821, with additional stamp OYP (imported code to the US) on the movement. The OYP Stamp was also found on Jackie’s famous tank watch movement as well as on James Gardner’s Cartier Baignoire movement (pointed out to me by @13byvu on IG.)
Noted also the wider space between 
the alphabets C A R T I E R on the dial than the later productions of the tank LC.