Breitling Navitimer Cosmonaute 24 Hour Dial (Ref. A12019), 1990s

Dealer description — Huntington Company

History and Significance The Cosmonaute sits in a very specific corner of the Navitimer lineage. Developed originally for astronaut Scott Carpenter in 1962, the defining feature is the 24 hour dial, designed to make sense of time in space where day and night lose meaning. That layout carried forward into later references like the A12019, which represents an early modern execution of the concept while still retaining much of the vintage character that makes the Cosmonaute appealing. The A12019 uses a modified 24 hour movement paired with the classic Navitimer slide rule bezel. What stands out here is how traditional the watch still feels despite being a later piece. The black dial with contrasting white sub-registers, aged lume plots, and printed aviation scales keep it visually rooted in earlier generations. It avoids the heavier, more polished direction Breitling would take later, and instead stays closer to the tool watch identity that defines the Navitimer line. Writer’s Thoughts The 24-hour layout initially feels unconventional, but quickly becomes intuitive, and it gives the watch a distinct identity compared to standard Navitimers. The 41mm case is right where you want it, large enough for the dial to breathe without feeling oversized. Paired with the olive nylon strap, it leans slightly more casual and utilitarian, which suits the Cosmonaute concept well. Our Promise Every watch is thoroughly vetted, carefully described with complete transparency, and guaranteed authentic. Each piece is offered in honest condition, ensuring collectors receive a timepiece that reflects both originality and integrity. Specifications Brand: Breitling Model: Navitimer Cosmonaute (Ref. A12019) Year: Circa 1990s Case Material: Stainless steel Case Size: 41mm Bezel: Bidirectional slide rule bezel Dial: Black with 24-hour layout and white sub-registers Movement: Manual modified 24-hour chronograph movement Strap/Bracelet: Olive nylon strap Buckle/Clasp: Pin buckle Contents: Watch only Condition Case: Clean with light surface wear consistent with use. Edges remain well defined with no major dings. Dial: Original dial with even patina developing across the luminous markers, giving a warm tone against the black base. Printing remains sharp and intact. Hands: Matching handset with light aging to the lume, consistent with the dial. Crystal: Clear with no surface marks. Strap: Fitted on a newer olive nylon strap in excellent condition.