this is a very rare cartier santos octagon automatic in steel with grey dial from the 1980s (ref 2965). the very first octagonal santos was designed by louis cartier for a friend of him in 1906. this friend, Alberto santos dumont, was a brasilian pilot pioneer. regarding that fact, the original octagonal santos from 1906 is called the very first pilot watch in history today.  it´s a rumour amongst cartier collectors, that the grey dials in steel santos have been released for the 75 year anniversary of the octagonal cartier santos. the 29mm watch is absolutely unpolished and in allover original condition, showing some signs of wearing. it´s automatic caliber is running strong and exact. the watch will currently fit wrists up to a range of 17,3 cm circumference.