WARNING: This contains SPOILERS for the credits scene in Avengers: Age of Ultron.
Those who sat through the initial credits of Avengers: Age of Ultron would notice something strange with the Infinity Gauntlet that Thanos puts on. For one, it was obviously not Odin’s treasure vault, and the gauntlet was a left-handed one.
In an interview with Cinemablend, Kevin Feige says there are two Gauntlets:
“There are two different gloves. That was not Odinâ€™s vault that you see at the end.”
That explains why the glove in Odin’s vault not only fits the right hand, but appears to already have gems in it.