“Oyster” means Oyster case and is a crown-sealing technology that prevents moisture from entering the case. It uses springs and spirals to substantially prevent water vapor from entering the case from the crown for the first time.
In 1926, the exploded view of the Oyster watch case clearly shows four parts.
“Oyster” means Oyster case. The origin of the Oyster case can be traced back to October 30, 1925, when German craftsmen Paul Penegaux and Georges Peret invented a crown patent (patent code: 114948) in La Chaux-de-Fonds. This crown-sealing technology prevents moisture from entering the case. It uses springs and spirals to substantially prevent water vapor from entering the case from the crown for the first time. Swiss watches replica.
Later, Mr. Hans, the founder of Rolex, persuaded them to transfer the patent and re-apply for the patent initially applied for in Switzerland in the UK, using Hans’ name, patent number 260554. The name “Oyster” came from Hans’s accidental inspiration when he opened an oyster cap at a dinner. On July 29, 1926, he registered the name in Switzerland and two months later in London. On February 28, 1927, Hans randomly registered four names in different languages for the Oyster, namely Huitre (French), Auster (German), Ostica (Italian) and Ostra (Spanish). Fake Rolex watches.
The Oyster case is composed of four parts. The outer frame is octagonal, with a cylindrical screw barrel inside. The upper ring and the back cover are connected to the screw barrel by rotating and locking and then screwed to the octagonal outer frame. There are two sealing rings made of soft metal in the upper frame and the back cover to increase airtightness. The crown is locked and connected by another small screw barrel attached to the outer shell. The two lugs are welded metal wires for installing metal straps.
Engine: Rolex Calibre 2671/Mingzhu Engine
Brand: Rolex
Gender: Ladies
Case Thickness: Around 12mm
Band Length: 17cm
Case Color: Rose Gold-tone
Model: 179171
Series: Datejust