This dagger was retrieved from the sarcophagus of Princess Ita. She lived around 1850 BC in the 12th Dynasty and was probably a daughter of Pharaoh Amenemhat II.
Daggers like this aren’t usually found in such remarkable condition. The crescent-shaped pommel is made from Lapis Lazuli. The aesthetic isn’t typically Egyptian. Some scholars have theorised that it may have been imported from Crete as it is Phoenician in style.
Either that or it was crafted by a foreign Bladesmith, especially for the royal court.
This beautiful bronze blade was the staple of Ancient Egyptian luxury. Only the super-rich had such things.