Long before the “Night at the Museum” movie franchise, The Metropolitan Museum of Art made a dynamic Hollywoodesque “knight at the museum” film entitled “A Visit to the Armor Galleries.” It was released in 1924 as part of a program to make their spectacular arms and armor collection come alive for the public’s education. Enchanting scenes include a suit of medieval armor leaving its glass case to answer visitors’ questions, a knight in full armor on horseback galloping through Central Park with the Belvedere Castle folly in the background, and curators attiring themselves, from helmet to sabaton, for a swordfight and joust. There is record of the Hollywood actor Douglas Fairbanks Sr., famous for silent swashbuckler films, being impressed by the film….