The reference 5170G-001 in particular, harks back to much admired Patek Philippe chronographs of the 1940’s, displaying a pulsometric scale (reminiscent of early ‘doctor’s watches’), with an opaline white dial and applied Breguet numerals – classically sized, at 39.4mm in case diameter.
The 5170G-001 has a white, opalescent dial with two, uniform subsidiary dials at 3 o’clock and 9 o’clock respectively. The dial is classically understated, balancing the inclusion of a pulsometer scale and inner minute track perfectly. The watch displays five hands - hours, minutes, and seconds for the time, with seconds and minute hands for the chronograph; the latter of which - instantaneously jumping every 30 minutes. Overall, the dial layout is cleanly designed, with the chronograph highly-legible in a variety of lighting conditions. The 5170G-001 also has a stop-seconds feature, making accurate synchronization when the crown is pulled, all the more convenient.
The reference 5170G integrates Patek Philippe’s very first in-house chronograph movement, boasting a number of patented innovations and technical refinements, designed to improve functionality and dependability, over that of previous Lemania-based calibres. The calibre CH 29-535 PS movement is based on the classic architecture of column-wheel control – a hallmark of exceptional mechanical chronographs. It features a large, four-spoke Gyromax balance-wheel with four poising weights, beating at a frequency of 4 Hz (28,800 A/h), with a guaranteed power reserve of 65 hours (58, with an activated chronograph).
As with all contemporary Patek Philippe watches, it has the Patek Philippe seal, guaranteeing its accuracy to -3 and +2 seconds daily, keeping time better than the industry benchmark chronometer grade movements. The movement is beautifully finished, with exquisite chamfering on all angles, polishing and decoration, in the form of Geneva striping.
Viewings can be arranged in Central London by appointment.