quattro[Moderator]
18225
Overview of the 5170 chronograph
The Patek Philippe Chronograph ref. 5170, introduced in 2010 as a succesor to the iconic ref. 5070, was the first of the brand to feature a fully in-house caliber: the CH 29-535 PS.
The case measures 39.4 x 10.9 mm
Do you like this reference and which variant is your favorite?
My personal preference goes to the initial yellow gold/pulsometer variant because of its unique vintage vibe.
Best, Emmanuel
A/ REF. 5170J-001 (2010)
Roman numerals, baton hands, pulsometer scale
credit: @johnphilipgreen (1), @youreterrific1(2), @mastrolorenziorologi (3), The Watch Club London (4-7) & A Collected Man (8-9)
B/ REF. 5170J-010 BEYER EDITION (2010)
50 pieces limited edition commemorating the 250th Anniversary of Beyer Chronometrie, Zurich.
Tachymeter scale replaces pulsometer.
credit: @phillipsperpetual
C/ REF. 5170G-001 (2013) Introduction of Breguet numerals, but the pulsometer and baton hands are retained.
credit: Monochrome
D/ REF. 5170G-010 (2015)
Removal of scale and introduction of leaf hands.
credit: 41 Watch (1-4) & Monochrome
E/ REF. 5170R-001 (2016)
credit: Monochrome (1-2) & Hodinkee
F/ REF. 5170R-010 (2016)
credit: Monochrome
G/ REF. 5170P-001 (2017)
Tachymeter scale, removal of minutes scale, diamond indexes and lumed dauphine hands.
credit: 41 Watch & Haute Time (last photo only)
BONUSES
1/ Evolution of the design

credit: Monochrome
2/ Comparison of the ref. 5170G-001 with the A. Lange & Söhne Datograph Up/Down and the Vacheron Constantin Harmony Chronograph
credit: Hodinkee
3/ Comparison with various A. Lange & Söhne Chronographs
credit: Langepedia