The ref. 2507/1R is a relatively unknown and rare reference from the 1950s. As thinner watches became increasingly fashionable, Patek offered Calatravas featuring its thin caliber 10-200. This example was made for the US market as indicated from the HOX on the movement and 18k on the outside caseback. This example has just been serviced and has a recent Extract from the Archives.
REF. 2594R
PATEK PHILIPPE ROSE GOLD REF. 2594R WITH BLACK DIA…
Patek Philippe 18K rose gold "Flying Saucer" with black dial, made circa 1958
$ 30,000.00