Patek Philippe 5170P Chronograph Platinum with "Bleu Degrade Noir" Baguette Diamond Dial and Tachymetre Base 1000, Skeleton Back, Dark Blue Crocodile Strap, Platinum Deployant Buckle. The 39mm diameter solid three-body case, downturned lugs, and fixed sloped bezel are polished. The dial is sunburst blue graduated to black at the edges with baguette-cut diamond hour markers and a railway-style 60-minute/1/5 second outer track. It includes a recessed railway-style 30-minute subsidiary dial at the 3 o’clock position, and a recessed railway-style small running seconds subsidiary dial at 9 o’clock. It’s water resistant to 30 meters/100 feet, and it has a 65-hour power reserve at full wind with the chronograph disengaged. The 8.5 mm thick case, dial, and movement are all signed. It has a leather strap with a matching platinum deployant clasp and a scratch-resistant sapphire crystal. It has rectangular chronograph push buttons and a screw-down exhibition sapphire display case back. 

This Patek Philippe Calatrava Chronograph 5170P-001 950 platinum rare discontinued edition has a mechanical manually wound caliber 29-535 PS column wheel chronograph movement that’s rhodium-plated with fausses cotes embellishments. It is stamped with the Patek Philippe seal, and it’s constructed with 34 jewels, 269 components, 11 bridges, and a shock absorber mechanism. There is a straight-line lever escapement, and a patented Patek Philippe Gyromax balance that’s adjusted for cold, heat, isochronism, and five positions. The mechanism oscillates at 28,800 vph (4 Hz).  

Reference No. 5170P-001