Three metal gloves, one of which the studio had to decide, years later, was a fake.
The Infinity Gauntlet is the object the first ten years of this catalogue are pointed at. There are three of them.
The one Thanos wears is forged from uru by the Dwarves of Nidavellir and is left-handed. The one the Avengers build to undo his work is right-handed, made by Tony Stark, Bruce Banner and Rocket out of Stark nanotechnology. And the third has been sitting in Odin’s vault since 2011, when it was put there as a joke.
Show detailsThe joke that had to be retconned
The gauntlet in Odin’s treasure room appeared in Thor as an Easter egg. Marvel Studios later realised it could not be the real one, since the real one had not been made yet, and settled internally on the idea that the Asgardian gauntlet was a fake. That decision is then written into Thor: Ragnarok, where Hela walks past it and says so out loud.
It is a rare case of a franchise correcting its own background detail in the text, in front of the audience, seven years later.