Diagram: Legendary Ursine silver sword - superior

 is a crafting diagram in and is needed to craft Legendary Ursine silver sword - superior.

It's found in a cave southwest of The Orphans of Crookback Bog (the same cave during Contract: Swamp Thing).

Associated quests

 * Scavenger Hunt: Bear School Gear Upgrade Diagrams - Part 3
 * Contract: Swamp Thing (proximity)