Breitling Navitimer Cosmonaute ’First Watch in Space’ 18kt Rose Gold 1/4th of Second Limited Edition 250 Pieces Chronograph Automatic, Green Olive Dial with Black Subdials and Luminescent Arabic Hour Markers and Hands, Self-Winding Manufacture Breitling Caliber B12 Chronograph Automatic Movement with 39 Jewels. This is a super rare limited edition boutique model with unique intricate engraving on the sapphire crystal transparent case back marking this watch as "One of 250" and "First Swiss Wristwatch in Space May 24th 1962". Fitted on a Black Alligator Leather Strap with 18kt Rose Gold Fold-Over Deployant Buckle.

The dial is unmistakably Navitimer, yet elevated with a rich olive green tone that gives this piece a completely different presence on the wrist. Balanced and highly functional, it features the signature slide rule bezel for in-flight calculations, a central 24-hour display originally designed for space travel, and three contrasting black subdials for 12-hour, 30-minute, and running seconds chronograph functions. The layout is both technical and visually striking, with luminous Arabic numerals and hands ensuring legibility in all conditions. Framed in warm 18kt rose gold, the watch carries a refined yet purposeful character that bridges aviation heritage with modern luxury.

At its core is the manufacture Breitling Caliber B12, a self-winding chronograph movement beating at 28,800 vph, delivering a robust 70-hour power reserve and built with 47 jewels. Visible through the sapphire crystal caseback, the movement is accompanied by intricate commemorative engravings marking this piece as “One of 250” along with the historic inscription “First Swiss Wristwatch in Space May 24th 1962,” paying tribute to Scott Carpenter’s Mercury-Atlas 7 mission. Limited to just 250 pieces worldwide, this Cosmonaute is not just another Navitimer—it is a direct link to one of the most important moments in both aviation and horological history, executed in a configuration that is exceptionally rare, highly collectible, and built for those who understand what this watch truly represents.

This is the kind of piece that separates a good collection from a serious one. Limited to just 250 examples worldwide, tied directly to one of the most important moments in space and watchmaking history, and executed in solid 18kt rose gold with a configuration you simply do not see come up often—this is as top-tier as it gets. The Cosmonaute isn’t just a variation of the Navitimer, it’s the most historically significant version of it, and pieces like this don’t circulate freely once they land in the right hands. For the collector who understands rarity, provenance, and long-term desirability, this is the definition of a cornerstone watch, something that doesn’t just sit in a collection, it anchors it.