In 1979 a movie was released that over time has had the titles The Great Riviera Bank Robbery, Dirty Money, and Sewers of Gold. It deals with the 1976 burglary in Nice of a safe deposit vault. In the movie, the vault door is represented like this:

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Though I'm not as familiar with European vault doors, it does seem like a prop. The attendant uses two long keys which she inserts maybe two inches into the keyholes.