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Vintage Omega Jumbo Bumper with 332 Cal. and 17 jewels movement, this beautiful watch still in good working condition with 2 tone (light and dark creamy) dial, Arabic numeral hour markers, subsidiary second, gold steel hands and original crown. Perfect piece for vintage watch collectors. This is a beautiful vintage watch for your daily wear, also makes an excellent gift! " For the uninitiated, it should be explained that the “bumper” nickname given to these particular watches is a reference to their automatic winding rotors. Unlike later Omega self-winding models, these early automatics do not allow for full circular motion of their rotors. Omega engineers at the time calculated that maximum winding efficiency could be achieved by limiting the available rotor travel to roughly 300 degrees.These superb movements were entirely hand assembled and built to remarkably high standards. Only experienced Omega watchmakers were involved in the assembly of these movements, due to their high complexity. As the rotor moves backwards and forwards, it is cushioned by a pair of small buffer springs. When in use, the wearer can actually feel the rotor impacting against the springs and bouncing back again, hence the bumper title ascribed to this type of self-winding movement. Sadly, due to the complexity of this design and its associated high production cost, despite the superb levels of accuracy and performance attained, Omega only manufactured bumpers for a relatively short time span, hence their high desirability factor today."Condition:Case and bezel overall finish with minor signs of use, dirt, & patina, the dial near 2 to 4 o'clock you can see the green spot oxidation but not affected the overall appearance, crystal without major dirt or scratches with naked eye. Service history unknown. Please be mindful, for the vintage watch with many decades of wear and use, overhaul or maintenance service will be recommended, in order to ensure the lasting reliability and accuracy of your timepiece.Photos will be part of description, please take a good look before made any decision. Crystal Material: Acrylic Case Material: Plague or L 80 micronsCase size: 34mm Band material: New 3rd party synthetic leather strap Band length: approx. 15-19cmItem tested run (72 hours) and time keeping good before sell. Private sale without any form of guarantee! Please bid responsibly and based on your affordability. If unclear do ask any questions prior to placing a bid. For bidders, please be aware that we are not responsible for any customs taxes or other additional charges that may occur in your country. Packing with bubble wrap and shipping with International Air Parcel including tracking number. For ASIA bidder please email me for more accurate shipping cost.Click here to bid on this Watch!