This rare vintage chronograph watch from the 1940s-1950s, featuring the Valjoux 84 movement and a striking black mirror dial, combines historical significance with the craftsmanship of Japanese watchmaking, particularly from the Breguet lineage.

Collectors are often drawn to such timepieces for their relative scarcity, as models like this typically emerge infrequently on the market, especially in good operational condition.

The robust design and functional elegance showcase an era where watchmaking precision was paramount, making it a coveted item for those who appreciate antique horology.

The aftermarket strap is a minor consideration against its overall integrity and presentation, which remains appealing to serious collectors in Japan's discerning market.