Patek Philippe 5980/1A Nautilus Chronograph Jumbo Stainless Steel, Blue Gradient "Noir Trame" Dial with Luminescent Hour Markers and Hands, Self-Winding Automatic Patek Philippe Caliber CH 28-520 C Movement, Sapphire Crystal Exhibition Case Back, Stainless Steel Bracelet with Double Fold-Over Deployant Buckle, 40.5mm - Rare Edition.

The dial is blue gradient with horizontal stripes, applied luminous faceted baton hour index markers, and luminous baton hands. There is a centered sweep chronograph seconds hand, and a 60-minute/one-fifth second track around the perimeter with Arabic numerals every five minutes. There are rimmed subsidiary dials for the combined 30/60-minute and 12-hour monocounter at the 6 o’clock position. There is a rimmed aperture window for the date at 3 o’clock. It has a 55-hour power reserve at full wind, and it’s water resistant to 120 meters/385 feet. The 12.1mm thick case, dial, and movement are all signed.

The mechanical automatic self-winding Patek Philippe caliber 28-520 C movement is rhodium-plated, with fausses cotes embellishment. It’s constructed with 35 jewels, 13 bridges, 327 components, a shock absorber device, and a straight-line lever escapement, It includes a Gyromax balance that’s adjusted to heat, cold, isochronism and 5 positions, a self-compensating free-sprung Breguet balance spring, and a unidirectional 21K gold rotor with oil-free ball bearing and zirconium balls. The mechanism oscillates at a frequency of 28,800 vph (4 Hz).

Reference No. 5980/1A-001