Description
The smoky grey dial of this 40.5mm steel Nautilus creates a sophisticated interplay with the brushed and polished surfaces of the integrated bracelet, defining the visual character of the Patek Philippe 5990/1A-001. This dual-time chronograph represents one of the most technically accomplished expressions in the modern Nautilus lineup, combining the collection’s signature porthole aesthetic with the complexity of a flyback chronograph and GMT function. The reference 5990/1A-001 houses the manufacture CH 28-520 C FUS movement, visible through the transparent sapphire caseback, while maintaining the sports watch practicality that has made this configuration highly sought after among collectors who appreciate both horological sophistication and everyday wearability.
Key Features & Specifications
Flyback Chronograph Function — The CH 28-520 C FUS caliber enables instant chronograph reset and restart with a single pusher activation, eliminating the traditional stop-reset-start sequence for timing consecutive events
Travel Time Complication — Independent local hour hand adjustment via crown positions allows seamless timezone changes without disrupting the chronograph or home time display, ideal for frequent travelers
Signature Grey Dial Configuration — The sunburst grey dial features applied gold hour markers and hands with luminous coating, complemented by white chronograph subdials at 3, 6, and 9 o’clock positions
Integrated Steel Bracelet Design — The brushed and polished steel bracelet flows seamlessly from the 40.5mm octagonal case, secured by the signature Nautilus fold-over clasp with safety mechanisms
Rounded Octagonal Bezel — The distinctive porthole-inspired bezel maintains the Gerald Genta design DNA while housing the complex movement within a 120-meter water-resistant case
Transparent Caseback Display — Sapphire crystal exhibition caseback reveals the decorated automatic movement with its gold rotor and intricate finishing details
Complete Documentation — Accompanied by original box and papers, providing full provenance and authenticity verification for this reference 5990/1A-001
Brand
Patek Philippe
Series
Nautilus
Model Number
5990/1A-001
Model Year
Call for Enquiry
Production Year
Call for Enquiry
Condition
Call for Enquiry
Box/Papers
Box & Papers
Case Material
Steel
Case Size
40.5 mm
Case Shape
Octagonal
Case Back
Transparent
Crown
Screw Down
Bezel
Rounded Octagonal Shape
Movement
Automatic
Dial Color
Grey
Hands
Luminous
Dial Type
Analog
Dial Markers
Index
Bracelet
Steel Bracelet
Band Material
Steel
Clasp
Nautilus fold-over clasp
Water Resistance
120 Meters (396 Feet)
Gender
Men’s
Watch Style
Sports Watch
About This Timepiece
Bracelet Sizing — Complimentary bracelet sizing included with every purchase. Contact us with your wrist measurement and we’ll have it ready before shipping.
Authenticity Guarantee — Every watch is thoroughly inspected and authenticated by our team of certified horologists. 100% authentic, guaranteed.
Warranty — New model watches include a 1-year mechanical warranty covering manufacturing defects. All watches include our confidence guarantee.
Shipping — Free insured overnight FedEx shipping on all orders. Fully insured, signature required, discreet packaging.
Contact Us
Questions about this timepiece? Our specialists are available to help.
Phone/Text: (310) 363-0481
Email: sales@jestikcollection.com
Jestik Collection is an independent luxury watch dealer and is not affiliated with Rolex S.A., Rolex USA, Patek Philippe, Audemars Piguet, Cartier, Omega, Tudor, or any brands listed.




















