Cartier Tortue Grand in 18k White Gold "Guilloché" Dial Ref. 3798Everyone and their aunt might be familiar with Cartiers Tank and Santos by now, right? Well, what we have here is not that! This is a funky and elegant Tortue (or "Tortoise" in English), a design by Louis Cartier from 1912 that has remained part of the collection for over a century in relatively small production runs. The case is crafted in 18k white gold and measures 44mm lug to lug by 36mm (hence the "Grand" nickname). We love how the larger case