Crown of the Obsidians

Gold Crowns of the Obsidians (also known as COTOs) are rare items that can drop from almost any activity, with higher occurrences on higher level creatures and resource nodes. They come in several different metal types, and can be used to restore maximum Durability to items. Each type of COTO can be exchanged for specific types of items, such as Potions of the Obsidians, that grant various temporary boosts to things like carry capacity or gathering speed.

There are Crown Merchants which allow you to exchange the various COTO types for Obsidian Potions or Gold COTOs. Gold Crowns of the Obsidians are unique in that they can be sold to any merchant in-game for gold.

Lore

 * Crowns of the Obsidians: These very rare coins left over from the age of the Obsidians can be found occasionally on higher level creatures. In later releases, they can be redeemed with trainers, the oracle, and other locations for blessings.
 * Blessings of the Obsidians: Collect the incredibly rare Crowns of the Obsidians so that the Obsidian Alchemists in Ardoris, Owl's Head, and Soltown will sell you potions that grant powerful blessings.

Used For
Other Crowns of the Obsidians can be used to purchase the Obsidian Potions. Gold Crowns of the Obsidians can be exchanged for any other type of Crown:

Crowns of the Obsidians can be combined with any item at the appropriate crafting station to restore that item's maximum durability. This is the only way to preserve an item from permanently breaking.

Trivia

 * When first introduced, COTOs had a value of but no other use. When their use in repairing gear was introduced, their value was reduced to, before finally being changed to no value after the Gold Crown was placed in the Add-On Store.