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Continuity mistake: When Buckingham is about to be arrested, the camera is looking directly at him. At this angle, his black fur collar is flipped up, covering the neck of his white shirt. When the scene changes to a wide shot behind him, the collar is folded down. (00:35:00 - 00:35:50)
Answer: While Harry can be a given name, it is also a standard "informal" version of the name Henry. For example, in the UK Royal Family, the younger son of Prince Charles, officially named Prince Henry, is commonly referred to as Prince Harry.
Tailkinker ★