Cartier Tank Cintrée 'Jumbo' Nautical an outer minute track with

an outer minute track with 5-minute scale

excellent proportions

as well as the uses to which the astronauts would put them

meaning it was probably switched out by a collector looking for an era-appropriate alternative to the glossy dials available at the time

Cartier Tank Cintrée 'Jumbo' Nautical an outer minute track withProvocative and audacious, the Cartier Tank Cintre was absolutely ahead of its time. Blazing an entirely unique path in ergonomic watch design, Louis Cartier used his design prowess to create a timepiece that followed the contours of a wearers wrist. Featuring a curved case and crystal, the genius of its design resides in its caseback construction. Seemingly flat to the naked eye, the caseback is built with a movement housing built into the inside,