Spear, how old and where from?

[Ninja]

Aha, lite svenska... hej
I hope these pictures can be to some help. Yes there is fairly long langets (28 cm) to attach the shaft.
It have been sugested its a "bannerspear" (dont now the english word)
Shaft has two plugs 40 cm apart, perhaps there has been hooks there.
Plug can be seen on last picture.