Ref. 1550 Rolex Oyster Perpetual Date, Superlative Chronometer Officially Certified, Ref. 1550. Produced in the late 1970s. Fine, center seconds, self-winding, water-resistant, yellow gold-shell over stainless steel wristwatch with date and a yellow gold-plated Oyster bracelet.
- USD1 500 - 2 500
- EUR1 200 - 2 000
- CHF1 800 - 3 000
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C. Three-body, polished, screwed-down case back and crown, crystal with cyclops lens. D. Midnight blue with applied gold and white baton indexes, aperture for the date. Luminous yellow gold baton hands. M. Cal. 1570, rhodium plated, oeil-deperdrix decoration, 26 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, self-compensating free-sprung Breguet balance spring, hack mechanism. Dial, case, and movement signed. Diam. 34 mm. Thickness 12 mm.