It was my grandfather's and I treasure it, it's really beautiful. But I never tried to (or knew how to) use it.
Now I had it fixed and cleaned a few weeks ago and shot a roll of film. I was worried about the exposure (it has no light meter), but the problem turned out to be another: almost all of the photos came out completely blurry and I don't know why.
I'm going to upload and show you some of them. They look unreal. I kind of like them.