The length of Major Brenan's cigar when he's talking to Marty at his club. At 7.43, the cigar is much shorter in the close up shots of him than when it is first seen at 7. 14 but it is longer again when the picture reverts to a long shot at 8.03 before returning to a shorter cigar at another close up at 8.12 then long again at 8.20.
At 36.01, when the henchmen are apprehending Marty in the sauna, they are both holding Marty's hands behind him, but as they go through the door at 36.07, one of the men is suddenly holding a gun on him.
At 45.45 the shadow of a crew member can be seen at the start of the scene with Brenan and the captain in his office.