A SLIM GOLD SQUARE WRISTWATCH, Cartier, Paris, "SANTOS", CIRCA 1975

18k, ultra-thin nickel lever movement, 17 jewels, glucydur balance, adjusted to 6 positions, white matte dial with Roman numerals, secret signature at VII, outer minute track, blued steel sword hands, brushed square case with polished bezel and sapphire cabochon set crown, screwed-down case back, case, dial and movement signed, with an 18k yellow and pink gold Cartier deployant buckle.