Rolex Oyster Perpetual Milgauss MK1
Serial No.: 412219 Circa 1958
Ref: 6541 MK1A Very Rare and Highly Sought after Rolex Stainless Steel Anti Magnetic Oyster Perpetual Milgauss Ref 6541. The Black Honeycomb MK1, Non Luminous Markers, dial has MLIGAUSS in Red, Original Lightning sweep seconds hand, and black revolving calibrated bezel..
The condition of the dial is in near mint condition and as can be seen from the pictures the insert is in worn condition and that is how one would expect to see it on a watch which is nearly 60 years old. The case is fat and sharp, in my opinion it has never been polished.
Rolex Geneva launched the Milgauss model ref 6541 during the 1950's. The design protected against high electro-magnetic radiations and was designed to a demand from clients working in areas like Research Labs or Power Stations.
The name Milgauss is derived from mille, one-thousand, and gauss, the unit of a magnetic field.
This model is so named because it can withstand a magnetic flux density of 1,000 gauss. The Milgauss is known for its unique lightning bolt seconds hand and Milgauss Bezel.
The Milgauss was designed as an antimagnetic watch specifically for those who worked in power plants, medical facilities and research labs (like CERN in Geneva) where electromagnetic fields can cause havoc with the timing of a watch.
This model was the first Rolex watch to shield a movement from magnetic fields. The honeycomb dial is made from laminated copper which protects the movement from magnetic fields.
Rolex Milgauss MK1 is where the dial and hands do not have luminous markers.
Rolex Milgauss MK2 is where the dial and hands do have luminous markers.