Rolex, Oyster Perpetual, Officially Certified Chronometer, Ref. 6105. Produced in the 1950's. Fine, center-seconds, self-winding, water-resistant, 18K yellow gold gentleman's wristwatch with date and a 14K yellow gold Rolex buckle.
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C. two -body, solid, polished and brushed, screwed-down case back and crown, ridged bezel. D. off-white with applied gold radium-coated dart indexes, aperture for the date with red and black Arabic numerals. "Alpha" radium-coated gold hands. M. Cal. Ref. 775, rhodium-plated, 18 jewels, straight line lever escapement, monometallic balance, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 36 mm.