Patek Philippe’s legendary line of perpetual calendar wristwatches began with the reference 1518 in 1941, and continues today with their current model, the reference 5270. Introduced in 2011, the reference 5270 replaced the reference 5970 first released in 2004.

The reference 5970 has a similar design and dial layout to its famous predecessors with day and month indicated via apertures, the date and moonphase display elegantly placed at 6 o’clock. In production for only seven short years, it had the shortest production run for any perpetual calendar chronograph by Patek Philippe. The 40mm diameter case with faceted lugs has a distinctly 21st century vibe, yet pays tribute to the reference 2499 with its rectangular pushers – only found on the coveted and extremely rare 1st series 2499 models. The 5970 was an immediate success and continues to be a collector’s favourite from Patek Philippe’s collection of complicated watches. With the current reference 5270 housing Patek Philippe’s first in-house chronograph caliber, the reference 5970 was the brand’s last perpetual calendar chronograph to feature a modified Lemania-based caliber.

The present example from 2009 is offered as a complete set, accompanied by its Certificate of Origin, presentation box, and additional solid caseback. Produced in yellow, pink, and white gold as well as platinum, yellow gold examples are considered the rarest. It represents a rare opportunity to obtain one of Patek Philippe’s most desirable classical perpetual calendar chronograph models in yellow gold, hardly ever offered on the market.