Official Harry Potter Welcome To Hogwarts Pin Collectors will want this Hogwarts Castle pin in their collection. The silver plated pin has enamel details and is perhaps one of the most famous schools for witches and wizards. Silver plated pin with enamel detail This charm comes in official Harry Potter packaging that features the Warner Bros logo on the back. The Carat Shop is the officially licensed manufacturer of Harry Potter Jewellery on behalf of Warner Bros.