Cartier Tortue
An early wristwatch with a case shaped like a tortoise shell.
The Tortue was one of Louis Cartier's first wristwatch shapes, before the Tank. It has been used for complicated watches such as single-button chronographs.
Materials: Gold or platinum; hand-wound movement
Manufacture: Made for Cartier in Paris with movements from Jaeger.
The rounded, swelling case.
Roman numerals that follow the shape.