Does anyone have any info on my watch?? Air King Date black face 40+ years old

[LukeThompson]

Hi all,

New to this forum so hello everyone! My Dad gave me his Rolex for my 18th that he has had for about 35-40 years and was bought for his 18th by my grandad! The problem is I cannot seem to find anything on it or some very rare pictures but nothing more.

http://imageshack.us/a/img812/8900/20130402180650.jpg
http://imageshack.us/a/img15/5641/20130402180641.jpg
http://imageshack.us/a/img839/2961/20130402180632.jpg
http://imageshack.us/a/img191/3647/20130402180620.jpg
http://imageshack.us/a/img703/9004/20130402180616.jpg

It is a Rolex Oyster Perpetual Air King Date, it has a black face and a magnifying glass for the date, silver steel casing with a silver metal strap.

If anyone has any info on this or pics could you let me know as it would be quite cool :)

It is also in perfect working condition and have just had it serviced by Rolex

Thanks
Luke