Samurai's Sword

The  is a melee weapon from before the great war added to Fallout 3 in the Mothership Zeta add-on.

Obtaining
When one is in the engineering room during the phase of the main mission in which you destroy the generators, there is a teleportation matrix that can be found by the entrance to the robot assembly area. When entered go to the far right corridor and Maggie will be there. Speak to her and the eleveator you are in will go defaulty thanks to her and youll wind up having to find through several corridors to find it. It can be found in the garage area at the end when you rejoin Sally in the room with all the first aid boxes. It can be given to Toshiro Kago.

Appearances
The appears in the Mothership Zeta add-on for Fallout 3

Bugs
When wearing Paulson's Outfit you cannot see the arm of the Lone Wanderer when slashing with the samurai sword.