Black dial Patek Philippe Aquanaut on a steel bracelet.

Patek Philippe Aquanaut 5167/1A: The Steel Bracelet Model

June 8, 2020

The Aquanaut 5167/1A gives Patek Philippe’s rounded sports watch a different feel from the familiar composite strap version. Our archive photographs show a black dial example on a steel bracelet, with polished edges and broad brushed links. This review describes that earlier watch, not a promise that the photographed piece is still available.

Case and Dial

The 5167 family has a rounded octagonal case and an embossed dial divided into a curved grid. Large Arabic numerals, luminous hands and a date window at 3 o’clock keep the display straightforward. Patek lists the case diameter as 40.8 mm measured from 10 to 4 o’clock; the older article rounded this to 40 mm.

Its slim profile is part of the appeal, but fit depends on wrist size and bracelet adjustment. Try the watch on to assess how the case and end links sit, rather than assuming every sports watch of a similar diameter wears alike.

Bracelet and Movement

The steel bracelet changes both the weight and the appearance of the Aquanaut. The folding clasp and alternating finishes are visible in the photographs. Inspect the links, clasp and any included spare links before choosing a particular example. A strap conversion requires compatible parts and should be discussed separately.

The original listing described calibre 324 S C, a self winding movement visible through the sapphire case back. Later 5167/1A examples use calibre 26‑330 S C, so the reference name alone does not identify the movement generation. Verify the individual watch and its records.

Buying an Earlier Aquanaut

Condition, service history, originality and included accessories matter more than an old asking price. The earlier article’s $38,000 figure was a historical listing, not a current valuation. Neither scarcity nor the Patek name guarantees future gains.

Do not assume a vintage water resistance specification describes the condition of an older watch today. Have its seals and water resistance checked before water exposure. Our gallery also retains the showroom and pickup photographs originally included with the review.