Question 1

What makes the 5980/1A different from other Nautilus references?

Accepted Answer

The 5980/1A was the first Nautilus ever fitted with a chronograph. Rather than the conventional triple-subdial layout used by most sport chronographs, Patek designed a single monocounter at 6 o'clock that combines the 60-minute and 12-hour totalizers, preserving the dial's symmetry and keeping it true to the original Nautilus aesthetic. The movement powering it, Caliber CH 28-520 C, was Patek's first self-winding chronograph built entirely in-house, debuted in 2006. A vertical clutch allows the chronograph seconds hand to start without a jump, and the flyback function lets you reset and restart timing with a single push. Stainless steel production ended in 2013, meaning no new examples have left the factory for over a decade.

Question 2

How does The 1916 Company authenticate a pre-owned Patek Philippe 5980/1A?

Accepted Answer

Every 5980/1A we offer goes through a full inspection by our in-house specialists covering case, dial, movement, and bracelet originality. We verify serial numbers against known production records, confirm the caliber CH 28-520 C is unmodified and running correctly, and document box-and-papers status. Once authenticated, the watch is backed by The 1916 Company's 2-year warranty. If you have questions about a specific example's condition or provenance, our team is available to walk you through the details before you inquire.

Question 3

Is the Patek Philippe 5980/1A a good long-term addition to a collection?

Accepted Answer

The 5980/1A checks several boxes that collectors prioritize. It is discontinued in stainless steel (production ended in 2013), carries Patek's first fully in-house automatic chronograph caliber, and sits within the Nautilus family, the most in-demand line in modern Patek production. Full sets with original box, papers, and accessories are considerably harder to source than watch-only examples, and that gap has widened since the reference went out of production. Collectors who want mechanical depth beyond a time-and-date Nautilus typically point to the 5980/1A as the natural step up, given its added complication and comparable case footprint.

Pre-Owned Patek Philippe Nautilus 5980/1A