Yesterday we went to visit a castle here in the Netherlands called "Slot Loevenstein".
It has quite a bit of history as it was used as a prison a few hundred years ago. It is now open as a museum.
I noticed a very old padlock in there, so I took a picture of it. Unfortunately I wasn't able to find any brand marks or anything on it.
Now I'm wondering what kind of lock it is

Here's a picture of the lock:

Unfortunately they wouldn't sell it to me

