Continuity mistake: As the Tin Man chops open the Witch's door only one piece of wood has fallen off of it. In the next shot when Dorothy comes through there's much more rubble on the floor (in front of and behind the door) than there should be. (01:24:00)
Continuity mistake: When the Lion, the Scarecrow, and the Tin Man are chopping down the witch's door to free Dorothy before the hourglass runs out, they are dressed in the guards' uniforms. We see the axe hit the door, and in the next wide shot they are not in the uniforms. There is a slight view of the uniforms in a pile on the floor, as if the trio had changed out of them between axe blows. (01:24:00)
Visible crew/equipment: As the Wicked Witch stands on the balcony with the hour glass a cameraman's shadow can be seen moving across it near the hour glass. (01:24:15)
Continuity mistake: As the Wicked Witch puts her flaming broomstick on the Scarecrow, look closely at the Tin Man. His chest dent that we saw several shots earlier on the left side of his costume, has been dented out. (01:24:20 - 01:26:15)
Continuity mistake: The Tin Man looks at the rope that holds up the chandelier and it's covering the knot. The next time we see it as he takes the axe to it, the rope is on the left of the knot. (01:24:40)
Revealing mistake: As the Wicked Witch throws the hour glass down at them the stone statue on the left of the monkey is shaking. (01:24:45)
Suggested correction: It's the monkey that is shaking, not the statue.
Continuity mistake: When the Wicked Witch throws the hour glass down at them the monkey on her right runs and hides behind the statue. In the next shot he's back sitting right next to her. (01:24:45)
Continuity mistake: As the Wicked Witch throws her hour glass at them we see behind her as she stands on the balcony, and her broomstick is definitely not anywhere near her. As she runs down the stairs, it's in her hand. (01:24:45)
Revealing mistake: The Wicked Witch throws her hour glass at them and it's guided down to the floor by a wire. If you look closely before it hits the floor sparks start up around it and after it hits it doesn't move or roll, but just sits there. (01:24:45)
Continuity mistake: As the chandelier falls on the guards at the witch's castle, all the candles are blown out by the time it lands. The next shot shows some of them relit. (01:24:50)
Revealing mistake: The candles on the chandelier that fall on the guards are not real. If you look closely at them they're operated with gas. (01:24:50)
Continuity mistake: When the Tin Man, Scarecrow, Cowardly Lion and Dorothy are cornered in the witch's castle, the scarecrow grabs the Tin Man's axe and chops a rope, releasing the chandelier, which falls on the guards. In the next shot, however, as the witch is shrieking "seize them", the guards give chase with only 1 or 2 laying on the floor. (01:24:55)
Revealing mistake: As the Wicked Witch chases the four yelling "Seize them," they run around what looks like a concrete pillar. If you look closely it's covered with cloth that moves as they run by. (01:25:00)
Visible crew/equipment: The four run away from the guards and leave the tower where the Wicked Witch is eventually melted. If you look closely in the two long shots from above them, the Tin Man reflects the bright stage light that is placed below them at the first bend of the walkway, on top of the Witch's castle. (01:25:25)
Continuity mistake: The Scarecrow is in the lead as the four run away from the guards and enter the tower where the Wicked Witch is eventually melted. In the next shot the Tin Man is in front. (01:25:35)
Continuity mistake: As the four enter the tower where the Wicked Witch is eventually melted, we see guards and steps on the left of the tower. When seen from above the entrance that the guards use is on the right of the tower. (01:25:35)
Continuity mistake: The Wicked Witch enters the tower and says, "Ring around the Rosie" and the broom in her hands changes between shots. The one she sticks in the fire is different. (01:26:00)
Continuity mistake: When the Witch melts, the broom is laying several inches from her dress. In the next shot, the broom is practically touching her dress. (01:26:20)
Continuity mistake: Immediately after Dorothy throws the water onto the witch, there is a long shot of the group as they observe the Wicked Witch beginning to melt. In this shot you can see that the Scarecrow's arm is still on fire, yet nothing is done about it as they all focus on the Witch. In the next full shot of the Scarecrow the fire is completely out. (01:26:20)
Continuity mistake: Dorothy throws water at the Wicked Witch not knowing it will melt her. If you look closely the witch is drenched when it hits her but in the next close up shot she doesn't have a drop of water on her. (01:26:20)
