The Polerouter has been developed for the SAS Pilots going on the first route flying over the North Pole. It has been designed by the young Gérald Genta, father of the most iconic watches of the 20th century such as the Royal Oak, Nautilus or Constellation. The movement featured an oscillating rotor that did not allow full rotation of the rotor when winding the movement. The term “bumper” refers to the spring loaded stoppers that prevented full rotation of the winding rotor. After 1954, Universal Geneve replaced the cal. 138 SS movement with the 28-jewel Universal Geneve cal. 215 micro rotor automatic movement, which featured a miniaturized oscillating rotor capable full 365 degree rotation. Universal Genève Polerouter from the late 1950's. The beautiful crosshair silver dial with gold bezel, without date.original unrestorated. Dauphine hands. Original lume dots. Big 35mm 14k filled gold -steel case. HF signed case back. The case measures 35mm without crown, 44mm lug to lug, 9.5mm thick 19mm lug width. Crown is replaced Please look at the pictures... Please review all photos in detail and read all descriptions one by one. Important Note: The Buyer pays ALL import duties and taxes. These charges are buyer responsibility. Dont worry about high custom taxes. custom form value will be arranged.Returns only accepted via international post service from buyers' country postal service other not accepted because of difficulties to import watch to Turkey Shipping: worldwide insured shipping with UPS or TNT Express.