Backburner Price Vintage 3.11 Refined Unique 0.05 Refined Uncraftable 0.11 Refined Strange 1.05 - 1.1 Keys Collector's 55 - 83 Keys Classes Pyro Tags Weapon Primary Blueprints Items Chance 17% Unique Vintage Strange Genuine Collector's Haunted Unusual Unique Vintage Strange Genuine Collector's Haunted Unusual $1.99