Bushells Antiques has dated this piece to the Edwardian era.

Design: These watches retain the iconic rectangular case and classic Art Deco-inspired dial with Roman numerals and blued hands, characteristic of the broader Cartier Tank collection, which was originally conceived in 1917 and inspired by military tanks.

Movement & Materials: Vintage models, like the one likely depicted, typically feature manual-winding mechanical movements, although later and contemporary "Tank Must" versions also offer quartz and even solar-powered "SolarBeat™" movements. The cases are often vermeil, and straps are commonly leather.
"Les Must de Cartier": The phrase "Les Must de Cartier" translates to "The Must-Haves of Cartier," reflecting the brand's effort to offer desirable luxury items at a broader price point.
Bushells Antiques has dated this piece to the Edwardian era.
Fine art, porcelain, jewellery, silver, clocks, pictures, oriental objects d’art and furniture
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