5170G, Chronograph, White Gold El Primero concave bezel

concave bezel

98’s four stacked mainspring barrels which offer an 8-day power reserve

and calibre 330 SC with a Geneva Seal

Fitting perfectly in the Toric collection with a signature dual-stepped

5170G, Chronograph, White Gold El Primero concave bezelA ref. 5170G 010, the white gold, black dial variant of Patek Philippes first fully in house, non split seconds chronograph. The 5170 replaced the Lemania based 5070 in response to greater emphasis being placed on in house movement design and manufacture. Instead of merely replicating the Lemania 2310 the brand relied upon previously, Patek Philippe launched a 5 year design effort that led to 6 separate patents in the release of the 5170s calibre CH