"Milgauss" Rolex, Oyster Perpetual, “Milgauss”, Superlative Chronometer, Officially Certified, Ref. 6541. Made in 1958. Very fine and rare, water-resistant, center-seconds, self-winding, anti-magnetic stainless steel gentleman's wristwatch with a stainless steel Rolex Oyster bracelet. Accompanied by a fitted box, original guarantee (now void), and Milgauss pamphlet. Three-body, polished and brushed, screwed-down case back and crown, graduated black bezel, anti-magnetic protection cap. Black soft iron "honeycomb" with radiumcoated round indexes and steel triangular markers. Radium-coated steel "dauphine" hands, lightning seconds hand. Cal. 1066, rhodium-plated, 25 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock-absorber, self-compensating Breguet balance-spring. Dial, case and movement signed. Diam. 38 mm. Thickness: 13 mm.