The reference 5170J was introduced in 2010, marking the end of the 12-year production run of the last Lémania based reference 5070. Following its introduction, variants in pink gold, white gold, and platinum were released after the yellow gold version was discontinued in 2014.

The 5170J embodies the quintessential Patek Philippe chronograph aesthetic, featuring harmonious case proportions and a simple two-register dial layout. It balances an inner minute ring with an outer pulsometer scale and the dial is adorned with applied baton hour markers and Roman numerals at 12 and 6 o’clock—an arrangement exclusive to the yellow gold model.

Further enhancing its appeal, the 5170J houses the in-house manual winding calibre CH 29-535 PS, which holds the distinction of being the first movement in Patek Philippe’s history to carry the Patek Philippe Seal, a testament to its exceptional craftsmanship and reliability. The research and development of this remarkable movement took five years. Watch enthusiasts will appreciate the visibility of the column wheel and clutch lever system in action through the chamfered and polished bridges, observable via the sapphire caseback.

Preserved in excellent condition, this example has developed a charming patina from minimal wrist time throughout its life. Complete with its full set of accessories, it presents a rare opportunity for discerning collectors to acquire a discontinued classic.