Description: Cartier Tortue WA504931 Pre-owned Cartier Tortue ref WA504931 is a classic Cartier, named for its tonneau-shaped case. The name “Tortue” literally means “tortoise” in French, referring to the watch’s curved, elongated oval shape with flattened sides. Cartier introduced the model in 1912, making it one of the brand’s earliest non-round watch designs. It was created during a period when Cartier was experimenting with shaped cases, the same creative