Valorous Jedi Sovereign Lightsaber

Valorous Jedi Sovereign Lightsaber is a custom main-hand or offhand lightsaber. It can be obtained by Jedi Knights as a mission reward for completion of the level 32 mission Fate of the Jedi, on the planet Tython.

Source
Valorous Jedi Sovereign Lightsaber is a mission reward obtained by completing Fate of the Jedi, a level 32 mission obtained on the Defender.
 * Mission reward