The sword and its accoutrements—a leather-and-wood sheath with beaver-fur lining—are in remarkable shape for such old pieces of history, and were buried in one of 12 graves found on the site.

Remarkably, researchers also recovered parts of the sword’s scabbard—a sheath of wood and leather lined in beaver fur. “Swords like this are very special,” Duncan Sayer of the University ...

Since the announcement in January, the institute determined that the sword was originally housed in a wooden sheath, though from which type of tree is not known. The blade appears to have seven ...