There are tourbillons, and then there are Breguet tourbillons.

Abraham-Louis Breguet patented the tourbillon in 1801, devising the rotating escapement to counteract the effects of gravity on the accuracy of a pocket watch. More than two centuries later, the complication remains one of watchmaking’s great technical spectacles, and few executions carry quite the historical legitimacy of the name that invented it.

This Breguet Classique Tourbillon 5 Days Reference 5317BA/12/9V6, dating to the 2000s, packages that history in quintessential Breguet form. Its 18K yellow-gold case frames a beautifully elaborate silvered dial, decorated with contrasting hand-guilloché patterns and surrounded by a traditional Roman numeral chapter ring. Blued Breguet hands indicate the time, while a fan-shaped five-day power-reserve indicator sits prominently at 12 o’clock.

The star of the show, naturally, appears at 6 o’clock. The exposed tourbillon carriage turns once per minute, simultaneously providing a running-seconds indication and giving the otherwise classical dial a wonderful mechanical focal point. It’s an appealing collision of old-school elegance and unabashed horological theater.

Turn the watch over and things become even more impressive. The sapphire exhibition caseback reveals the automatic movement in all its glory, with extensive engraving that transforms the bridges and plates into an almost baroque composition of gears, scrollwork, jewels, and polished components. It’s the sort of movement that makes a solid caseback seem positively unreasonable.

This example is fitted with a signed yellow-gold deployant clasp. For all its complication, the 5317 remains unmistakably a Breguet: elegant, intellectually serious, beautifully decorated, and just extravagant enough. When the complication on your wrist was invented by the man whose name is printed on the dial, provenance doesn’t get much better.