Catalog:Black Iron Crown of Pwnage

The Black Iron Crown of Pwnage is the rarest known sold hat, with only a single purchase. It was made on the 30th July, 2007. Also, unlike many hats, it was made by Shedletsky (then called Telamon), not the user ROBLOX, which usually makes all the hats and gears.

ROBLOX Description
"This black crown is forged from iron and weighs heavy on the wearer's head. In the first epoch of ROBLOXia, these crowns of dark pitted metal were given only to the most godlike lethal warriors."

The Sole Owner
Only a single person owns the BICP. The hat was awarded to PokerGod ('Poker_Man29' in the blog post), for being the first person to reach 10,000 Knockout's (KO's). It was annouced on the ROBLOX Blog on July 31st, 2007:

"Congratulations go out to Poker_Man29, the first player to achieve 10,000 knockouts. This was accomplished while maintaining close to a 2:1 ratio of KOs/WOs.

In recognition of this feat, we are gifting Poker_Man29 with the first Black Iron Crown of Pwnage...

...Until then, Poker_Man29 has the only one!"

The blog post can be viewed here.