Collector's Master's Yellow Belt
This item last sold for 90 Keys and a double spelled Caribou Companion (which was priced around 164 Keys). In total, it was priced at around 255 Keys.
It is the only one known in existence.
Collector's Specialized Killstreak Master's Yellow Belt
Team Fortress 2 Level 1 Hat
Paint Color: Team Spirit
Sheen: Team Shine
Killstreaks Active
Only a master of Jarate earns the right to wear this once-white bandanna, stained yellow from the rigors of a harsh training regimen.