Patek Philippe Split-Seconds Chronograph Ref. 5370P-001 The Patek Philippe ref. 5370P-001, introduced at Baselworld 2015, is a split-seconds chronograph in 41 mm platinum with a black Grand Feu enamel dial and white-gold Breguet numerals. It was replaced in 2020 by the blue-enamel 5370P-011. - Calibre CHR 29-535 PS - Split-seconds chronograph - Black Grand Feu enamel dial, white-gold Breguet numerals - 41 mm platinum case Full set. Maker: Patek Philippe. Reference: 5370P-001. Available through ELITA's private desk — verification review, discreet handling and storage. Price on request.