screw-in_crown

Screw-in crown

Watch part

In 1926 Rolex for the first time introduced a patented system of a waterproof watch under the name “Oyster” , where the crown of the watch was screwed into the watch case. Thereby a much higher water resistance of the watch was attained.

screw-in_crown.txt · Last modified: 11.10.2021 17:01 (external edit)

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