I remember as a kid having one of the Usborne books (80s) very badly illustrating this, and it gave completely the wrong idea about what you got; one chopped up hologram from a magazine later and I was sadder and wiser.

You get pretty much what you would naively expect from chopping up a hologram before reading that kind of misleading "two copies" text: exactly the same view of the object as you had from that part of the hologram before you cut it up.