Effect: The sword is one-handed, but deals +9 damage. Furthermore, it deals firearms-style damage (the number on the dice, not the sum) to anybody who is a foe of the Catholic Church. (Or at least, it did back in the 17th century. Who knows what would count as a foe of the Church these days?)
Description: The sword is a rusty old Frankish-style one-handed sword that looks like its been knocking around Europe for the better part of a millennium. (It has.) A gold inlay in the hilt supposedly contains saints' relics, although it's apparent that nobody has ever had the guts to check. (Either you risk the wrath of God or you risk ruining the artifact, neither of which sounds like a good idea.)
What you hear: Old rumor suggests that this is the no-shit Durandal, sword of Roland. (Dukes in the modern occult underground think that's probably a load of horseshit, but who knows?) Rumor has it that the sword belonged to some long-dead cabal called "The Footmen" back in the 17th century — specifically to their mystical leader called "the Last King." Of course, all references to the The Footmen disappear before the Thirty Years' War, and nobody knows what they were trying to do. Occasionally, Durandal shows up in a private collection or at the Swap Meet, but nobody pays a lot of attention to it because how do you authenticate something like that, anyway?