The Ulfberht sword is a legendary Viking-age weapon known for its exceptional quality and mysterious origins. Crafted between the 9th and 11th centuries, these swords featured high-purity steel and the distinctive “+ULFBERH+T” inscription on the blade. They were stronger, sharper, and more flexible than most weapons of the time. The Ulfberht sword became famous for its advanced metallurgy, making it one of the most remarkable swords in medieval European history.