New to Typophile? Accounts are free, and easy to set up.
With the help of Mark Simonson and a few Harry Potter enthusiasts at the DeskTopPublishing Forum I was able to identify all the authentic fonts used in the Harry Potter Books... EXCEPT THIS ONE.
Is it even a font ? If you would like to see more of the lettering... I've posted it here: http://www.geocities.com/tatesha/HarryPotterAF.html