Battered Hilt

Battered Hilt starts the epic quest chain.

It is the hilt of Quel'Delar, the high elf version of Quel'Serrar.

Source
This item drops randomly from both elite trash mobs and bosses in the Frozen Halls instances on heroic mode.

The hilt also has a chance of being listed on the Black Market Auction House by with the opening bid of.