Fortune Coin



The Fortune Coin teaches you how to summon Lucky, a golden pig companion.

Source
This item was available to participants of the Blizzard Worldwide Invitational 2007, who were given a code that unlocks this pet in-game. The item can be acquired from the following NPCs by redeeming the WWI promotion codes:
 * in Ironforge
 * in Orgrimmar
 * in Shattrath City

Pet Journal
''Lucky squeals when he's angry or when he's eating. Either way, you don't want to bother him.''

Notes and trivia

 * Occasionally, Lucky grazes on weeds and wiggles its rear.
 * Warcraftpets.com reports that this pet can only be used on Korean servers. Though this seems unlikely, since there were many international visitors that attended the Worldwide Invitational 2007, the English language admission tickets do not contain any code to unlock this pet. It seems that the item is regional only.
 * 2007 was the Year of the Golden Pig. Those born in The Year of the Golden Pig are supposed to be wealthy, prosperous, lucky, and fertile.