Greenguard Knight Sheathed Blades

Location: Oaklore Keep
Price: N/A (Reward from the 'Battle for Stryche' quest)
Sellback: 0 AC
Rarity: Awesome Rarity
Description: Many creatures lurk in Greenguard, you need a good blade to fight them off! (This weapon costs 0 ACs so you can store it for free forever!)

Thanks to Harrison.