Revealing mistake: The shot of the two nuclear missiles being launched is used twice, just reversed. They seem to have changed the saturation slightly in one of them to make it look different, but there are identical clouds at the top left/top right in both shots, ruining the trick.
Add timeJon Sandys
Revealing mistake: When Bond and XXX are visiting Stromberg's home by speed boat it shifts or rocks in the water when they step on board. This is normal, because speed boats are very unstable. When they reach Stromberg, they have to step off, but the boat does not shift in the water as it should, in fact, the way the boat slowed and stopped was stiff and unnatural. Obviously indicating the boat was on a trailer for these scenes.
Add timeVince van Riet
Revealing mistake: The escape chamber is being lifted into a ship at the end of the movie, but look closely. The reflection we see in the the window glass of the chamber is that of a sunny beach and several palm trees quite nearby, and what looks to be either a palm tree or a camera man in the lower right section of the glass.