They look to be German. As others have mentioned the design has been common from the late 1600’s until about the middle 1800’s. The box of wards and the attachment method are probably the best dating features. I have a similar design lock that I was told was from around 1800 and the warding in the box of wards is fairly simple and consists of a basic rivit type attachment of what is essentially a nail. Anything more complex is probably older.
I also have a couple of mortise locks from around 1740 and they have hand made screws. The particular locks were very upscale at the time, the escutcheons were silver plated and I don’t think screws were a common method of attaching metal to metal then. I think the normal attachment method around that time was peening or riviting things in place which meant they weren’t very servicable.
Hope that helps a little, there really isn’t much information available beyond a couple of books like the Enclyclopedia Diderot and similar and they don’t have any significant dating methods in them. I do agree that the first two locks are door hardware and the last is very likely from a chest. The view in the photo’s is what would be visible on the inside of the door and there should be a single projection from the other side that helps guide the key into the box of wards.
BBE.
