I'm no expert but I think that is a picture of King Abdul Aziz.
He was the first King of the modern day country of Saudi Arabia.
He started unifying the various tribes in 1902 and ruled the Kingdom until 1953.
The image resembles pictures of him with the same headband and beard (see picture below).
So, for the Saudis, it's kind of like putting George Washington's picture on a watch.
You never know, it might be worth more money with the image on it.
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