The 1955 model represents a round case ultra-thin watch with a caliber 1003 movement, only 1.64mm thick, replica omega Seamaster Planet Ocean Chr watches the watch having a total height of just 4.10mm. This results in the Ultra-Fine 1955 being the thinnest watch in the world. The mechanical manual winding movement is based on the original caliber 1003 from 1955, but rebuilt in 18ct gold and bearing the Hallmark of Geneva.This Hallmark of Geneva can only be applied when the movement complies to 12 technical and style criteria which replica rolex GMT Master II SS watches are outlined on the Vacheron Constantin website (click here to visit the Hallmark of Geneva section). Below is a picture of the rebuilt caliber 1003 movement in 18ct gold by Vacheron Constantin:The Ultra-Fine 1968 model is a square case timepiece, using Vacheron Constantin caliber 1120 movement, as introduced in 1966 and produced since the end of 1967.
Below replica omega Seamaster Planet Ocean Chr watches you see a picture of both timepieces. Vacheron Constantin caliber 1120 movement has been based on Jaeger-LeCoultre caliber 920. Jaeger-LeCoultre however, never used this movement in one of their own watches. Vacheron Constantin, together with Audemars Piguet and used the Jaeger-LeCoultre caliber 920 movement in their own watches with their own caliber numbers.Vacheron Constantin (caliber 1120) and Audemars Piguet (caliber 2121) are the only manufacturers to still have these ultra-thin movements in production. Patek Philippe used it (under caliber number 28-255) during the first 10 years of the Nautilus timepiece before switching to a different movement, bearing caliber number 335SC.All in all, the Vacheron replica omega Seamaster Planet Ocean Chr watches Constantin caliber 1120 movement has somewhat of a cult-status amongst collectors, especially those who love ultra-thin watches or have a weak spot for G?É¬©rald Genta (designer of the Nautilus and Royal Oak) or Hysek (designer of Vacheron Constantin 222′ which later became the Overseas ).