Leroy's Sword

Leroy's sword was a weapon owned and used by Leroy. It is unknown how the sword was broken, but it caused the death of Leroy. The hilt of the sword was returned to Camp Half-Blood and placed in the Big House Attic.

The Lightning Thief
When Percy walks into the attic to receive a quest from the Oracle, he notices among other artifacts, the hilt of the sword with the label "This broke and Leroy got killed.1999.". It is most likely still in the attic during all later books.