before everyone screams 'time traveler': the +VLFBERH+T viking sword steel actually has a clean answer

transcribing this from a comment buried in a youtube doc i was watching at 2am, it shut up half the comment section so im saving it. the mystery as it gets posted: ~170 viking-era swords (c. 800-1000 AD, found all over Northern Europe, big cluster in Scandinavian + river finds) are inscribed +VLFBE……