[Sushi-Y]

Originally Posted by Jump

about your questions:

Spoiler:

the first sword is Excalibur, the second is Avalon, which before now resided within Shirou's body when Kitsirigi sealed it within Shirou at the end of the last Holy Grail War. His trace materialized it.

A little off.

Spoiler:

Her main sword is Excalibur (the less decorated one). The other one is Caliburn (the sword Authur pulled out of the stone and broke later in battle, before receiving Excalibur from Lady of the Lake) (In other myths, the two are the one and the same sword).

Shirou traced Caliburn during the last battle with Berserker in Fate route for Saber.

Avalon is Excalibur's sheath.

(Why do I keep correcting people around here ^^; )