Patek Philippe Perpetual Calendar Chronograph in Yellow Gold 'Fourth Series'

Introduced by Patek Philippe in 1986, the Reference 3970 holds a legendary position as the brand's third serially produced perpetual calendar chronograph, following the iconic 1518 and 2499. As a transitional masterpiece, the 3970 perfectly bridged the gap between vintage charm and modern reliability, making it a cornerstone for any serious watch collection.

This 18K yellow gold (3970EJ) example dates to 2001 and belongs to the coveted Fourth Series. While it looks quasi identical to the third series, the Fourth Series introduced Patek’s secure folding deployant clasp, replacing the traditional pin buckle for enhanced security and comfort.

Sourced directly from its original owner, this timepiece has been worn regularly but with immense care. It remains in honest, original condition with no signs of careless polishing, preserving the crisp lines of the 36mm case.