Jacob & Co Astronomia Tourbillon Bucherer BLUE

About this reference

The Jacob & Co. Astronomia Tourbillon Bucherer BLUE (Reference AT100.30.AA.AA.A) was released in 2019 as a limited edition of 18 pieces. Collectors value this reference for its 50mm 18k white gold case featuring four sapphire crystal windows and its Bucherer-exclusive blue color scheme. The manual-wind Caliber JCAM10 movement utilizes a four-arm carousel that rotates every twenty minutes, supporting a triple-axis gravitational tourbillon, a 288-facet sapphire "Jacob Cut" diamond, a magnesium globe, and a differential-driven time display. This specific collaboration represents a high-complication pillar of the brand’s modern history. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often between $400,000 and $600,000 depending on condition. In 2022, a unique piece from this series was sent to the International Space Station and subsequently auctioned for charity, highlighting the technical durability of the movement architecture.