This Bell & Ross by Sinn Space 1 belongs to the same Sinn 140/142 chronograph lineage tied to German spaceflight mission STS-61-A on the wrist of astronaut Reinhard Furrer. More than a “space watch” in name, this watch was designed as a functional instrument—centered on the legendary Lemania caliber 5100. The large matte black dial and bright orange chronograph hands were purpose-driven design choices chosen for legibility under demanding conditions. Today, this piece is an exceptional relic of the bold space-age period of the late 20th century.