Patek Nautilus: five minutes, a napkin, a revolution

Gérald Genta often told the anecdote, and each time the duration of the sketch grew shorter. Five minutes, he claimed. In pencil, on a restaurant napkin, during the Basel Fair of 1974. The model that would emerge two years later redefined what a luxury watch could be, and cemented a designer’s signature that independent watchmaking still claims today.

A steel watch that costs more than a gold one

The Patek Philippe Nautilus 3700/1A, released in 1976, sat on the wrist like a provocation. Forty-two millimetres of brushed steel, seven-point-six millimetres thick, rounded octagonal bezel, integrated bracelet forming a single sculpture with the case. Everything about this watch contradicted the established codes of 1970s luxury horology, including the notion, inherited from another steel icon born two decades earlier, that a sports watch ought to remain an affordable tool.

Patek’s advertising slogan underlined the irony: “One of the world’s costliest watches is made of steel.” Three thousand one hundred dollars at launch, the price of a yellow gold Calatrava. The maison’s retailers, briefed in advance, openly doubted a buyer existed.

Genta drew the bezel first (a transatlantic liner’s porthole), then the rest followed, as if obvious.

Calibre 28-255 C, thinness as a manifesto

Under the bezel, calibre 28-255 C (built on a Jaeger-LeCoultre 920 base) was one of the slimmest movements ever produced for an automatic. It is what allowed the 3700 to be both “Jumbo” in diameter and discreet in thickness. The 21-karat gold rotor, partly peripheral, remained visible through the caseback. A technical detail, but above all a signal: here was a sports watch that had abandoned no manufacture-grade requirement.

The myth, the bubble, the aftermath

The 5711/1A, direct heir to the 3700, was discontinued in 2021 at the peak of a speculative bubble that drove it to two hundred and forty thousand dollars on the secondary market, for a retail of about thirty-five thousand. Calm has since returned, partially. One certainty remains: no five-minute sketch in horological history has ever had greater consequences.