Reference 570 was Patek Philippe's very first "large" Calatrava model that was produced in series. At the time of production, the reference was the largest "time-only" wristwatch produced by the firm. Manufactured from 1938 to 1972, the model was cased predominantly in yellow gold, and rarely in pink gold, white gold, stainless steel and platinum. The reference featured a multitude of dial variations. While some were fitted with Breguet numerals, others featured black lacquer dials and even those with a two-tone nature.

The present watch is cased in pink gold and features raised hour numerals, which is confirmed by the Extract from the Archives. This dial configuration, featuring straight Arabic numerals is playfully dubbed "telephone dial", due to its similar resemblance to the rotary dial of old telephones. This "pink on pink" effect is incredibly striking, further enhanced by the pink gold numerals, giving a wonderful chromatic appearance. In fact, research shows that the present watch is the first example cased in pink gold with a "telephone dial" to appear ever appear on the market, highlighting the utter rarity of the watch.

The most striking characteristic of the dial is the "underline" beneath the "Geneve" portion of the signature. While scholars today debate the meaning of this subtlety, it is confirmed that many examples from the period feature this detail.

Preserved in wonderful condition, the case furthermore features two strong hallmarks, an assay mark and excellent proportions.