Cartier, a gentleman's steel and gold Santos automatic calendar wristwatch, 1980's,

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Cartier, a gentleman's steel and gold Santos automatic calendar wristwatch, 1980's,
circular white dial signed Cartier, Roman numerals with secret signature at 7, date aperture, sweep centre seconds, blued steel hands, self-winding movement, steel case with octagonal gold bezel, protected winding crown, steel and gold bracelet with deployant clasp, 30mm.