Important Collectors' Wristwatches, P...

Geneva, May 08, 2010

LOT 390

Rolex Ref. 16550, Explorer II Spider Rail Dial Rolex, ?Oyster Perpetual Date, Explorer II, Superlative Chronometer, Officially Certified,? case No. 8399270, Ref. 16550. Made in 1983. Fine and rare, two time zone, center seconds, self-winding, water resistant, stainless steel wristwatch with date, 24-hour bezel and hand, independently adjustable 12-hour hand and a stainless steel Rolex Oyster bracelet.

C. Three-body, polished and brushed, screw-down case back and crown, graduated 24-hour bezel for the second time zone, Twinlock winding crown protected by the crown guard, sapphire crystal with cyclops lens. D. Black with applied luminous round, triangular and baton steel indexes, outer minute divisions, aperture for the date. Luminous steel skeleton hands. M. Cal. 3085, rhodium-plated, 27 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, selfcompensating free-sprung Breguet balance spring, Microstella regulating screws, hack mechanism. Dial, case and movement signed. Diam. 40 mm. Thickness 13 mm. Approx overall length 170 mm.