The reference 570 might not be the very first Calatrava, but it is undoubtedly one of the most desirable. Its large-for-the-time 35mm case still offers everything that made the earlier Calatravas so coveted, from the flat bezel to the perfectly balanced dial. Its few additional millimeters make a huge difference from the 31mm size of the original reference 96 too. For that reason, the 570 proved extremely popular and was produced during 30 consecutive years until the mid-1960s. Looking at the dial, the short signature ("Patek Philippe", without the "& Co" mention) allows us to date this watch post 1948, when the branding change happened. There is something else to notice on the dial, just above the elegant small second register: the word "Trucchi," for the famous retailer based in Naples, Italy. Note that its lugs do show some previous polishing, but that's something to expect with a piece of this age.

A vintage dealer based in Tel Aviv is offering this lovely Calatrava here.