The Sword That Shouldn't Exist Direct

: Each authentic blade is marked with the name "+VLFBERHT+" in a specific arrangement of crosses, which functioned like a high-end brand name in the 9th to 11th centuries. Other "Swords That Shouldn't Exist"

: They were crafted using crucible steel , a high-purity metal with a carbon content so high that the technology to create it wasn't thought to exist in Europe until the Industrial Revolution. The Sword That Shouldn't Exist

The phrase is also popular in modern gaming and fiction to describe "illegal" or overpowered weapons: : Each authentic blade is marked with the