ref.530
Yellow, 36mm

A fine and extremely rare 18k yellow gold manual-winding wristwatch ref.530.
With Patek Philippe Extract from the Archives confirming prduction of this watch with silvered dial and applied indexes in gold in 1939 and its subsequent sale on January 30th, 1940.

This watch bears a ref.530, usually reserved for the renowned oversized chronograph wristwatch, introduced into the market in 1938. However, reference 530 was used not just for the chronograph but also for a plain model without any complications. Whereas the present watch very much resembles a traditional reference 570, close examination shows differences in case proportions such as a larger diameter of 36.5 mm and a concave bezel.
This model is known to have been made in yellow gold, mostly 14K, only two known in 18K, and in stainless steel, some example with a pink or yellow gold bezel.