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.
 * This is undoubtedly a reference to the famous peace activist Mary O'Grady from Colombia. She gained influence from a popularized incident when Colombian militants beat unarmed protesters with batons and shields.