The Name "Excalibur" was first used for King Arthur's sword by the French writers. It was not the famous "Sword in the Stone" (which broke in battle), but a second sword acquired by the King through the intercession of his druidic advisor, Merddyn (Merlin). Worried that Arthur would fall in battle, Merlin took the King to a magical lake where a mysterious hand thrust itself up from the water, holding aloft a magnificent sword. It was the Lady of the Lake offering Arthur a magic unbreakable blade.
The legend is celebrated in this nicely detailed 44" version of the classic sword.