Eric also had a scepter, an orb and a key made for his coronation. This key is an item found only in the Swedish regalia (although a pair of gold and silver keys also were formerly presented to a new pope at his coronation).
For Eric's coronation, he was presented with a scepter, an orb, and a key. This specific key is unique to the Swedish regalia (although once awarded as a set of gold and silver keys to a newly crowned pope).