Rolex Milgauss 116400GV Z-Blue Discontinued

About This Watch

The Rolex Milgauss 116400GV with Z-Blue dial was one of the most visually distinctive watches Rolex ever produced, and its recent discontinuation has sent secondary market prices soaring. The name "Milgauss" comes from "mille" (thousand) and "gauss," referring to its ability to resist magnetic fields of up to 1,000 gauss, a specification that made it invaluable to scientists and engineers working near strong electromagnetic equipment. Originally introduced in 1956 for researchers at CERN, the Milgauss was discontinued in 1988 before being relaunched in 2007. The "GV" designation stands for "Glace Verte" (green glass), referring to the unique green-tinted sapphire crystal that is exclusive to the Milgauss. Combined with the vivid Z-Blue dial and the iconic orange lightning bolt seconds hand, the visual effect is unlike anything else in watchmaking. The caliber 3131 features a shield of ferromagnetic alloys that protect the movement from magnetic interference. The antimagnetic properties are achieved without a soft iron inner case, allowing the movement to be seen through the transparent caseback — a Rolex rarity. The Milgauss Z-Blue has become an instant collectible since its discontinuation, treasured for its scientific heritage and unmatched visual character.