Burning Flames Max's Severed Head
Granted by Valve for reporting a serious exploit regarding Giftapults and Key generation.
The player was first granted a Sunbeams Wiki Cap, but after the backlash, it was removed and the player was granted this cosmetic.
There are 3 known instances of this item in Unusual quality (two with 'Sunbeams' and one with 'Burning Flames' effect).
Source
Unusual Max's Severed Head
Team Fortress 2 Limited Level 100 Hat
Paint Color: An Extraordinary Abundance of Tinge
★ Unusual Effect: Burning Flames
Halloween: Rotten Orange Footprints (spell only active during event)
Halloween: Spectral Spectrum (spell only active during event)
''Expertly crafted headwear from tear-filled Wiki Cap farms in the Philivolvopls.''
( Not Tradable, Marketable, Usable in Crafting or Gift Wrappable )