Revealing mistake: When Hamilton is watching the Fillet of Soul restaurant at the beginning of the movie, he is stabbed and killed. When the coffin is brought over to him, you can see the 'dead' Hamilton breathing. (00:03:15)
Revealing mistake: The snake held up to kill the agent and later Solitaire is obviously not a real snake but a fake one. Look at how stiff it looks. (00:04:20 - 01:44:05)
Suggested correction: As someone who used to own a redtail boa constrictor and a regular watcher of snake channels like Chandler's Wild Life, I can tell you that this snake is very much behaving like a real constrictor would when held that way. It is stiff because it's one long noodle of muscle. And depending on how he presses his fingers into it, it can lock up even more. That's how he forces the mouth to open up by pressing into the muscles on the back of the neck below the head.
Revealing mistake: When Madeline Smith (The Italian agent credited as Beautiful Girl) emerges from the wardrobe / closet, she embraces Roger Moore. He then uses his magnetic Rolex to pull down the zipper on the back of her dress. If you look closely, you can see the cable/wire under dress pulling the zipper down. (00:12:20 - 00:12:00)
Revealing mistake: When Tee Hee bends the barrel of Bond's Walther PPK, in the close-up, the score marks where the barrel has been pre-cut are visible. (00:24:50)
Revealing mistake: When Rosie pokes a gun through the door at the Bond's bungalow, Bond uses his cigar to burn her hand, and then throws her onto the bed. You can see that the person being thrown is not Gloria Hendry, but a male stunt double. (00:35:05)
Revealing mistake: When Bond is giving Mrs Bell her flying lesson at the airport, the wings are torn off the plane. When Bond says, "Same time tomorrow, Mrs Bell?" the reaction shot of Mrs Bell shows the left wing to be intact. It is her same reaction shot when Bond climbed into the plane. (01:07:00)
Revealing mistake: As "Tee Hee" (the man with the claw) escorts Bond to the alligator pond at the farm, they at one point stand next to each other. You can see that Tee Hee's prosthetic arm is much longer than his real one- about as long as you might expect it to be, if the actor is really holding a prop with his actual (and perfectly good) hand. (01:20:55)
Revealing mistake: When Bond and Quarrel goes to shore there are clear shadows and sun reflections, showing it was actually shot at daytime. (01:40:55 - 01:41:40)
Revealing mistake: There are two different shots of two red explosives being placed on the ground next to a bamboo stalk, with the explosives being in a different position in each shot. However, you can see that it is the exact same location filmed for both explosives: the same stalk, the same leaves, and the same dirt pattern. They just stuck a bomb in the same spot and filmed it twice to make it look like two different bombs placed. (01:43:45)
Revealing mistake: When Bond and Solitaire are tied to the orange thing you can see a wire on the bullet which makes it fly across the room. (01:52:45)
Revealing mistake: When Tee Hee and Bond are fighting in the train compartment, watch the right edge of the screen. In one of the shots the end of the set is visible as Bond shoves Tee Hee against the "wall", which wobbles. So much is revealed you can see the wooden framing. (01:58:10)
Revealing mistake: At the end of the film, when James Bond pushes Tee Hee outside the train, you can see his real arm during one quick shot. (01:59:40)
