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Lot 135. An enamel, rock crystal and diamond strut clock, by Cartier, circa 1918-1919. Estimate £12,000 - £18,000. Courtesy Bonham's. 

The circular rock crystal case decorated with a rose-cut diamond border, the two-toned blue guilloché enamel dial with finely pierced rose-cut diamond hands, within a white enamel chapter ring bearing gold leaf Roman numerals between fluerette motifs, reverse backed in silver with a rock crystal strut, caseback signed Cartier, numbered 11696, diameter 8.5cm, fitted maker's case.

Provenance: Property from a European Private Collection.

Bonham's. London Jewels, December 4, 2019 2:00 PM GMT