Earth Imager eXp 3000 detects ancient dagger

This ancient dagger from the early middle ages was found in a depth of 60 cm. After unsuccessful searches with different other metal detectors the dagger has been detected with the basic equipment of the Earth Imager eXp 3000. Only the iron blade kept well preserved over all the long time the object was buried in the ground. There is only a small piece left which belongs to the wooden handle of the dagger. The exact place of this discovery is undisclosed.