ROLEX REF 6542 GMT BAKELITE BEZEL GILT TROPICAL DIAL STEEL Rolex, "Oyster Perpetual", "GMT-Master, superlative Chronometer officially certified," Ref. 6542. Made in 1955 Very fine and very rare, two time zone, center seconds, self-winding, water-resistant, stainless steel wristwatch, 24-hour bezel and hand and a stainless steel Rolex buckle. Three-body, polished and brushed, red and blue graduated bidirectional revolving bezel for the second time zone in 24 hours, screwed-down case back and crown, crystal with cyclops lens. Brown with luminous round, triangular and baton indexes, outer minutes/seconds track, aperture for the date. Luminous gilt skeleton hands. Cal. 1030, rhodium-plated, 25 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, self-compensating Breguet balance spring, butterfly rotor, index regulator.