Double Falcon

Double Falcon (also possibly Dju and Nebwy) was a Predynastic pharaoh of Lower Egypt belonging to Dynasty 0. The exact timeline of his reign is unknown, although it is estimated to be during the 33rd century BCE. The length of his reign is unknown.
Discovery.
In 1910 M. J. Clédat, an Egyptologist, discovered the first evidence for king Double Falcon. A farmer at el-Mehemdiah in the north-eastern delta brought him a jar and some incised fragments found while planting a palm-grove in nearby el-Beda. Clédat soon discovered four serekhs of king Double Falcon.
In 1912 Hermann Junker found a tomb at Tura, which contained a complete jar with a serekh topped by two falcons.
More serekhs of king Double Falcon have been found in the Sinai, in Tell Ibrahim Awad in the eastern delta, in Adaima and Abydos in Upper Egypt, and in the Palmahim quarry in southern Israel. Because these finds have mainly been in Lower Egypt and north-western Sinai, it shows Double Falcon may have only ruled over these areas. However as some of his serekhs have been found in Upper Egypt and Canaan, it shows that the power of the Dynasty 0 kings was spreading. This had already begun towards the end of the Naqada III period, through trading or warfare.
Name.
The serekh of Double Falcon is unique. Firstly, it is the only one topped by two Horus falcons, facing each other. Secondly, the serekh does not have a place for the name. Instead this space is filled by vertical lines which usually represent the niched facade of a palace. The serekh does not have the horizontal line that separates the palace facade from the name of the ruler above. Finally, each falcon stands on its own peak. Experts believe that these features are symbolic. The two falcons could represent Lower Egypt and the Sinai, as it seems that Double Falcon reigned over both regions. Dreyer believes that the falcons stand on a on a sign meaning "mountain" which is N26 of Gardiner's sign list: N26 He reads the name as "Dju" ('), so that the name of the king is shown by a pair of falcons on mountains above a plain serekh. But another expert, van den Brink, reads the name as "Nebwy" ('), meaning "the two lords", and similar to a much earlier palette on display in the Barbier-Mueller Museum of Geneva.