Harry shook his hand as he turned the envelope over to reveal a purple wax seal with a coat of arms that had a lion, an eagle, a badger, a snake, and other animals surrounding the capital letter "H." When the letters begin to arrive at number four Privet Drive, Harry Potter has never even heard of Hogwarts. His gruesome aunt and uncle quickly seize the documents, which are addressed in green ink on yellowish parchment and have a purple seal.