When Professor and Mrs. Myles are talking to the shopkeeper about the chess pieces, Professor Myles lights the shopkeeper's cigarette with a lighter. Afterward, the shopkeeper prevents Professor Myles from closing his lighter and blows out the lighter's flame instead. Immediately after this, there is a closeup of the shopkeeper's face and the lighter shows in the lower left corner. The flame of the lighter is still burning.
At approximately 56:00, Sig von Aschenhausen puts down a decanter with his left hand, but when the camera angle changes, he removes his right hand from the decanter.
The song that represents Oxford in the film is the Eton Boating Song.
There are numerous night time scenes with bright skies, particularly at the end in Italy when even the mountains in the background are not only detailed but extremely bright themselves. The use of filters to darken the scenes were most inadequate and perhaps they would have been better if they had been shot on darkened stages. But if not filmed on a lighted set then in the last scene the viewer would not have been able to see the toy car fall a great distance (and explode) when our heroes pushed their car off a cliff.
As the Bride and Groom are leaving Oxford, their chauffeur opens the car door for them, which makes the crew visible in the reflection.
When the couple is leaving Oxford after their wedding, Frances limps on her left foot. When leaving the Liszt concert, she limps on her right foot.