The Rings of Power season 2 episode 6 contains references to some hugely important items in The Lord of the Rings lore.

The Rings of Power said Sauron's crown came from Morgoth's Iron Crown. Did it really? Or is that just another one of the Dark ...

According to the Uruk, the power contained within the Iron Crown, combined with the Elven Rings of Power, is enough to defeat Sauron, but this all sounds very dangerous; Galadriel won't even look ...

Taking all of this into account, Morgoth's crown should not still be in Middle-earth at the time of The Rings of Power. That said, it does resemble the Iron Crown as it is described in lore. Morgoth ...