NOT KNOWN FACTS ABOUT ROLEX OYSTER PERPETUAL DATEJUST

This was a hefty motion in comparison to newer modified actions and so required a chunkier case to accommodate it. This movement was changed eventually through the Calibre 1555 from the 180X series. The addition of a hacking seconds perform came during the nineteen seventies Using the Calibre 1556, which enabled the wearer to stop the seconds hand