Given that the last shot of the harbour from this film was taken in the 1960's, I doubt very much if this quick image of Queen's Road East was taken any later, although my knowledge of the area is too limited to be able to say exactly. I think it's okay to assume this is footage from an older film spliced in for the purpose of establishing Hong Kong as the initial location for the story. What should be familiar is the shape of Central Market on the right hand side.
For a glimpse of the same area in 1955 you can go back to look at Love is a Many-Splendored Thing. The opening ambulance scene drives past the same spot. See here.