Ultra Secret Rare
In the OCG, this rarity is used by all cards in the V Jump August 1999 Special Present, the original Limited Edition, the Official Guide Starter Book promotional card, and the Duel Monsters II tournament meeting experience promotional card.
In the TCG, the only card to be printed in this rarity is the Yu-Gi-Oh! GX Special Edition version of "Elemental Hero Wildheart". A run of "Collectible Tins 2004" were also misprinted as Ultra Secret Rare.
On the Official Card Database, this rarity is labeled as Secret Rare.