This is something very important in Persian and Egyptian archeology but I see that it is not talked about and I don't know why.

Achaemenid King Darius I dressed as an Egyptian Pharaoh (is the vernacular term often used for the monarchs of ancient Egypt). 27th Dynasty of Egypt, 521-486 BCE.

Darius I ruled the empire at its territorial peak, when it included much of Western Asia, parts of the Balkans (Thrace–Macedonia and Paeonia) and the Caucasus, most of the Black Sea's coastal regions, Central Asia, the Indus Valley in the far east, and portions of North Africa and Northeast Africa including Egypt (Mudrâya), eastern Libya, and coastal Sudan.

Darius is mentioned in the books of Haggai, Zechariah and Ezra–Nehemiah of the Hebrew Bible.

British Museum has stolen this important artifact.