The Rolex Bubble Back

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tempusmaximus
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The Rolex Bubble Back

Post by tempusmaximus »

In 1933 , the engineers at Rolex modified the oyster case back by giving it a distinctive , rounder , more chubby shape . This was aimed at making room for the newly patented and revolutionary rotor that transformed manually wound watches into automatic ones .

http://www.europastar.com/time-keeper/1 ... -back.html

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