Harry Potter Advanced Potion Making Book PinbadgeHarry Potter Advanced Potion Making Book Pin Badge The Advanced Potion Making book was written by Libatius Borage and has been used over the years to educate the young students at Hogwarts in the making of recipes and spells. This pin badge is a must for your collection. Pin wherever you want to show your love for Harry Potter. There are other love potion pin badges in this collection. Collect them all Silver Plated pin badge with sparkly enamel detailing. This pin badge comes on Harry Potter branded card packaging. The Carat Shop are the licensed manufacturers of Harry Potter Jewellery on behalf of Warner Bros.