The Hindsgavl Dagger is genuine treasure. The dagger is made of flint stone and was found on Fænø in Lillebælt back in 1867. The Hindsgavl Dagger is on display at the National Museum in Copenhagen.
Hindsgavl Dagger is one of the finest examples of flint forged work available from that time; it is just 1 cm thick and 29.5 cm long.
When the dagger was found on Fænø, the island belonged to Hindsgavl Castle (today it is privately owned). It was a coincidence that the Hindsgavl Castle estate inspector was nearby when a little boy who was walking with his mother, found the dagger.
The boy just thought that he had found a rather nice stone. The inspector bought the dagger from the boy for one daler (old Danish coin), and gave it to the master and mistress at Hindsgavl Castle.
At the National Museum you can find the Hindsgavl in the "Denmark Prehistory" exhibition.
Source: National Museum