When I was 11 I bought an Iron Cross from a guy that had set up a small stall in a mall. I had saved for a while to buy something German as I was just getting interested in history. I remember asking him several times if it was real, and being amazed that it was, with his assurances, after all he was an expert.
It is so obviously a fake.
I still have it, and keep it around for two reasons.
1) there's people in the world low enough to steal from a kid
2) never be that guy.