Extra Points 

Hans Wilsdorf founded Rolex in 1905 at the age of 24, along with Alfred Davis in London. In 1919 they moved their operation to Geneva, Switzerland. This move was brought about by high wartime taxes on Gold and Silver in the UK after the Great war 1914-1918. They were now closer to their suppliers in Bienne. The Rolex Oyster case was released in 1926. Marketed as the world's first “waterproof” watch. The notches on the bezel and case back meant they could be screwed down to the middle case with a special tool invented and manufactured by Rolex to hermetically seal the case. In 1927 a young swimmer Miss Mercedes Gleitz swam the English channel wearing the “Oyster”. Later in 1933 the team of the first expedition to fly over Everest wore them. It was also famously worn by Sir Malcolm Campbell, “King Of Speed”, on the 4th September 1935. An advert of the time made a big splash with him saying “The Rolex watch is still keeping perfect time- I was wearing it yesterday when Bluebird exceeded 300 mph.” He broke the world land speed record 9 times between 1924 and 1936. 1931 saw the debut of the Rolex Oyster Perpetual, their first self-winding watch that was also water-resistant and dustproof.

Rolex first introduced the Datejust in 1945 to commemorate the company’s 40th anniversary.  The Rolex Datejust first made its appearance as the reference 4467, and upon its initial release, it was only available in solid 18ct yellow gold.  It wasn’t until the 1950s, with the introduction of the reference 5030 and 5031, that stainless steel and Rolesor (two-tone) versions became available, and the “Datejust” name started to appear on the dial.