COG Tag 15 - Gears of War 3 Guide - IGN

After dropping the counterweight on the queen, proceed up the elevator.  At the top move to the right into the dark area. Opposite 3 arcade machines there

Collectibles - Gears of War 3 Guide - IGN

Communauté Steam :: Guide :: Gears 5: Collectibles Guides

Collectibles - Gears of War 3 Guide - IGN

COG Tag 13 - Gears of War 3 Guide - IGN

Steam Community :: Guide :: Gears 5: Collectibles Guides

I've Got This! Achievement in Gears of War 3

Collectibles - Gears of War 3 Guide - IGN

Act 3 Chapter 4 - Gears of War 3 Guide - IGN

Gears of War: Ultimate Edition COG Tag Guide - Hardcore Gamer

Gears of War: Ultimate Edition COG Tag Guide - Hardcore Gamer

James Dominic Fenix, Gears of War Wiki