CARTIER SANTOS DUMONT REF.7809Brand Model Reference Year Case Material Dimensions Dial Crystal Crown Caseback Movement Strap Signed Description Cartier Santos Dumont 7809 Circa 1970s 18K yellow gold 20 mm 29 mm White with black Roman numerals and inner minute track Mineral glass Set with blue sapphire cabochon Snap on, engraved Manual wind, caliber 78 1 (based on JLC 2512 1), 17 jewels Cartier leather strap Case, dial and movement The Cartier Santos Dumont stands as one of the