Yes, it's impossible for the genuine to have those margins. I have genuine examples in my collection on http://billsey.seymourfamily.com under Argentina. Click on the stamp from a page and it will open a larger scan.
I just got the Finland pages up, had to wait for really odd sized mounts for that booklet pane page at the end. Sweden is next, then I really need to get back and finish scanning some of the partial collections.