The only real one is the card. mercury's name was spelled Freddie, not "Freddy" as seen in the link of the first one- so that's kind of a give away on the first one even if you have no clue about queen graphs. another clue, you're never going to find a genuine freddie signed item for a starting price of less than a dollar. The second and third items listed here are terrible.
It won't load on my mobile, but do yourself a favor and stay away from rareandsigned. It's literally the laughingstock of the queen collecting world. I've never seen a genuine freddie sold through them in all the time I've known of the site.