The Rolex Oyster Perpetual Milgauss is a popular model introduced by Rolex in 1954 with the model number 6451. The Milgauss was designed as antimagnetic watch specifically for those who worked in power plants and research labs where electromagnetic fields can cause havoc with the timing of a watch. The Milgauss was equipped with antimagnetic alloys and encased by a Faraday cage. The words Milgauss is derived from the French word mille, which means one-thousand, and gauss, the unit of the magnetic field. The original Milgauss was very similar to the appearance of the Rolex Submariner, with an over-sized case and bezel, with the Twinlock crown, and a riveted Oyster bracelet. Although the Milgauss only went through two different models (6541, 1019) the Milgauss went through numerous configuration changes before being discontinued in 1988.
In 2007, Rolex brought back the Milgauss after nearly two decades. The Milgauss today remains a sought after model amongst Rolex collectors.
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