Percival Graves' polyjuice flask

This flask was used by Percival Graves to hold Polyjuice Potion.

Behind the scenes

 * This may in fact be Gellert Grindelwald's flask as he used polyjuice potion to assume the identity of Percival Graves, but the source described it as Graves' flask.

Appearances

 * Fantastic Beasts and Where to Find Them: The Art of The Film