Rolex use a steel called 904L for making the Rolex Perpetual watch cases due to its anti-corrosive feature.
There is a video on the Rolex site showing the case production process.
Image © Bip Mistry 2011
An amazing looking stainless steel Rolex Oyster Perpetual Datejust, one of the most popular gents Rolex watches along with the Rolex Daydate, also worn by ladies who prefer a large dial.
The watch has a ‘certified chronometer’ which means it has been tested by the Contrôle Officiel Suisse des Chronomètres (COSC). COSC was set up in 1973 as an independent Swiss organisation that certifies a chronometer under strict conditions which include different positions and temperatures.
Images photographer © Bip Mistry 2011
A 1952 Rolex Oysterdate (Super Oyster) [model reference no. 6144] with red centre seconds hand, date in red, and a mid-size stainless steel screwback case. The crown is original and signed. The Swiss made 17 jewel movement is adjusted to two positions, has a patented superbalance and is signed Rolex.
Images © Bip Mistry 2011
A stainless steel Rolex Oyster, small case, boy’s size. All original dial. Charming watch.
Image © Bip Mistry 2010