+ Cartier Vintage 1980s Tortue 18-karat Gold Watch, Ref. 9606 (6.3'' Wrist)

Cartier’s 'Tortue' watch was introduced in 1912 as one of the house’s earliest shaped cases, breaking from conventions with its softly curved, tonneau silhouette. Sourced by Stephanie Windsor, this 1980s model is crafted from 18-karat yellow gold with a collectible “Paris” dial detailed by Roman numerals, a chemin de fer minute track and blued feuille hands. Powered by a hand-wound movement, it’s fitted with a finely articulated gold bracelet that follows the case’s sculptural lines.