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: 03.07.2022 15:37 by 127.0.0.1