Harry Potter Hufflepuff House Crest Pen Harry Potter Hufflepuff Crest Pen with Charm This pen has been created using the style guide from Warner Bros. The Crest of the famous Hogwarts House, founded by Helga Hufflepuff Yellow Pen with attached Hufflepuff Crest charm Approx. 15mm Writes in blue ink This pen comes attached to an Harry Potter branded card tag and shows the Warner Bros logo on the reverse. This pen is one of many new Harry Potter pens we offer as a part of a collection. The Carat Shop are the licensed manufacturers of Harry Potter Jewellery on behalf of Warner Bros.