The Royal Mint issued a coin to commemorate the seventy-fifth anniversary of H.G. Wells’s death—and it would probably have the author spinning in his grave. In an article Writer’s Relief found on The Guardian website, science fiction fans of his books immediately noted errors on the H.G. Wells coin. For instance: When does a Martian tripod have four legs?

And this isn’t the first time the Royal Mint has made mistakes on literary coins. Find out what additional mistakes were made on the H.G. Wells coin—and on other commemorative coins—here.