Revealing mistake: When Oddjob throws his hat at the statue and the camera cuts a close up of it, as the hat goes by the head, you can see the seam (in a freeze frame) where the head is propped up by the filler used to disguise the break. Also, the brim of the hat where the blade is, passes about two inches above the break. Therefore, were it possible, the brim doesn't cut the statue.
Continuity mistake: In the opening, Bond finds the button to let open the secret hatch in the oil tank. This hatch looks very heavy and is driven by a motor or something; you can hear the humming sound of it as well. When Bond is inside, now he can close it by hand. Also when he leaves the oil tank, he uses the same hatch, and can now open and close the hatch again with his hands.
Continuity mistake: When Bond first sees golden Jill on the bed she is lying diagonally across the bed with her right foot on the bed and pointed like a ballerina on points. As Bond approaches the bed her right foot is pointing towards the camera. The last shot of Jill's legs show both her feet hanging over the end of the bed meaning that she has changed position and is now lying straight along the bed.
Continuity mistake: Goldfinger's crew uses a giant truck-mounted laser to burn their way through the Fort Knox entrance. Several shots of the truck show the laser beam being moved across the entrance extremely rapidly; however, when these shots are intercut with views of the entrance itself, the beam inches across the entrance door very, very slowly.
Continuity mistake: At the Miami resort, when Goldfinger walks towards the card table, on the far left you can see Bond and Leiter standing watching Goldfinger in the background. In a close up shot of Bond and Leiter we see Bond reaching for a towel and putting it on his shoulder, but then in the wide shots there is no towel over his shoulder and he never moves.
Deliberate mistake: Goldfinger has imprisoned Bond in a jail cell guarded by an Asian. Bond draws the Asian into the cell by smiling through the small barred prison door window and then slowly sinking out of sight. When the Asian enters the cell, Bond drops on him from above. While it is physically possible for Bond to work his way up the walls into that position, he could not do it in the time elapsed nor could he do it without passing his body in front of the small barred window (which would be seen by the Asian guard).
Revealing mistake: At the beginning of the film, Bond shoots his rope gun to climb over the wall. If you look closely, the rope he shot didn't even come out of his gun. It comes from off the left side of the screen. Very visible in slo-mo, or paused.