- Year
- 2026
- Condition
- Unworn
- Set
- Box and papers
- Movement
- Self-winding
- Size
- 40.5 mm
Set and condition
Complete set
This Nautilus Flyback Chronograph, Travel Time is accompanied by its original presentation box, warranty card and supporting documentation. The watch and included items are inspected by an expert watchmaker before sale. Additional photographs and video of this piece are available on request.
Original presentation box
Original presentation box and packaging.
Original papers
Warranty card and supporting documentation.
Inspected prior to sale
Reviewed for condition, completeness and functionality. Additional details and photographs are available on request.
Condition photography
Additional close-up images of specific areas are available before purchase.
Overview
Flyback chronograph and Travel Time, in steel
The Patek Philippe Nautilus Flyback Chronograph Travel Time, reference 5990/1A-011, in steel on the steel bracelet, sunburst blue-grey dial with a black-gradient rim. Self-winding calibre CH 28-520 C FUS with flyback chronograph, two time zones and a date hand coupled to local time; 40.5 mm from 10 to 4 o'clock, 12.53 mm high.
The reference 5990 is the Nautilus that carries two complications at once: a flyback chronograph and Patek Philippe's Travel Time, a second time zone with a date hand coupled to local time. This execution is steel on a steel bracelet with a sunburst blue-grey dial and a black-gradient rim; Patek Philippe calls a complicated Patek Philippe in steel a rare thing, which is its own account. The case is the porthole construction, 40.5 mm from 10 to 4 o'clock and 12.53 mm high, with the two time-zone pushers built into the case at 9 o'clock, a screw-down crown and a sapphire crystal back.
The self-winding calibre CH 28-520 C FUS is the chronograph calibre with the Travel Time work added: 31 mm across, 6.95 mm high, 370 parts, 34 jewels, a 21K gold central rotor. Travel Time works with two hour hands: the solid hand shows local time and the skeletonised hand home time, and the pushers at 9 o'clock set the local hand; each zone has its own day/night aperture, and the date hand follows local time, so it changes when the traveller does. The chronograph is a flyback with a central seconds hand and a 60-minute counter. It runs at 28,800 semi-oscillations an hour on a Gyromax® balance with a Spiromax® balance spring, for 45 to 55 hours of power reserve, and carries the Patek Philippe Seal.
For collectors
Patek Philippe's own observation is the pairing: a self-winding flyback chronograph, a second time zone and a local-time date hand in a steel case, which it describes as a rare example of a complicated Patek Philippe in steel — a statement about its range rather than about the market.
Key details
Design and engineering
- Porthole caseSteel, 40.5 mm from 10 to 4 o'clock and 12.53 mm high, with case, bezel, pushers and bracelet in contrasting polished and satin finishing; screw-down crown, sapphire crystal case back, water-resistant to 30 m.
- Travel TimeTwo hour hands — a solid one for local time, a skeletonised one for home time — with a day/night aperture for each and the date hand coupled to local time; the time-zone pushers sit in the case at 9 o'clock.
- Flyback chronographCentral chronograph hand with a 60-minute counter; flyback means a running chronograph is reset and restarted with one press.
- DialSunburst blue-grey with a black-gradient rim, horizontally embossed; white gold applied baton-style hour markers with luminescent coating, a white gold local-time hand with white luminescent coating and a skeletonised white gold home-time hand, white varnished.
- Bracelet and claspSteel bracelet with the brand's patented fold-over clasp and its lockable adjustment system.
Calibre CH 28-520 C FUS
- Self-winding, 21K gold central rotor
- Flyback chronograph, central chronograph hand, 60-minute counter
- Two time zones: local and home time, with a day/night aperture for each; date coupled to local time by hand
- 31 mm across, 6.95 mm high; 370 parts, 34 jewels
- 28,800 semi-oscillations per hour (4 Hz), Gyromax® balance, Spiromax® balance spring
- Power reserve 45 to 55 hours
- Patek Philippe Seal
The reference
Technical specifications
| Reference | 5990/1A-011 |
|---|---|
| Collection | Nautilus |
| Calibre | Caliber CH 28-520 C FUS |
| Movement | Self-winding |
| Functions | Flyback chronograph, Central chronograph hand, 60-minute counter, Two time zones: local and home time indication, Day/night indication for local and home time in apertures, Date coupled with local time by hand |
| Case dimensions | 40.5 mm |
| Case thickness | 12.53 mm |
| Case material | Steel |
| Case back | Sapphire crystal case back |
| Water resistance | 30 m |
| Dial | Sunburst blue-gray with black-gradient rim, horizontally embossed, white gold applied baton-style hour markers with white luminescent coating |
| Bracelet | Steel |
| Clasp | Steel patented fold-over clasp |
| Jewels | 34 |
| Power reserve | min. 45 hours – max. 55 hours |
| Frequency | 28,800 semi-oscillations/hour (4 Hz) |
Buying with HYPA
Purchase with confidence
- Original warranty card included, dated 2026
- Free insured delivery within Australia · international quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 6 reviewsFrom clients of HYPA International on Google. Read the reviews
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