Collector's Ornament Armament
This item was last sold in 2017 for 200 Keys pure. It is currently on sale for no less than 1,000 Keys.
It is the only one known in existence.
Collector's Ornament Armament
Team Fortress 2 Level 20 Decorative Bombs
Just like the Soldier's actual grenades, these shiny glass baubles are purely ornamental.