Found an old SS honor dagger and an old revolver under our house

We're having some work done in the basement of our house near Munich, Germany, and the builders today found two rusty old remnants of history.

http://imgur.com/gallery/70iXdQa

I'm 99 % certain that the dagger is an SS Ehrendolch ("honor dagger"), judging by the general shape of the hilt and the very bottom of the sheath.

The revolver seems to be a Belgian pocket revolver. This one looks very similar: http://www.waffenboerse.ch/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/6/2/6299_2.jpg

I called the police and they took both the dagger and the revolver away. I probably could have kept the dagger, but I'm glad to be rid of the stuff, to be honest. Just thought some history nut might find it interesting.