Important Modern & Vintage Timepieces

Geneva, May 15, 2016

LOT 449

ROLEX REF. 16550 EXPLORER II BLACK SPIDER RAIL DIAL CHRONOMETER STEEL Rolex, Oyster Perpetual Date, "Explorer II," Superlative Chronometer, Officially Certified, case No. R387479, Ref. 16550. Made in 1986. Fine, 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 Jubilee bracelet.

Three-body, polished and brushed, screwed-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. Black with applied luminous round, triangular and baton steel indexes, aperture for the date. Luminous steel skeleton hands. Cal. 3085, rhodium-plated, 27 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, self-compensating freesprung Breguet balance spring, Microstella regulating screws, hack mechanism.