O'Grady's Peacemaker

 is a unique Police Baton.

Can be repaired with Police Batons.

Availability
This weapon cannot be found anywhere in the game and can only be obtained via console.

Behind the scenes
This could be a reference to a police officer in Vault 101 named officer O'Grady. Theory is that this was going to be a unique police baton but was not added to the final game.