Forgotten Seal

What drops it

 * Enchanted Bow
 * Enchanted Hammer
 * Enchanted Sword
 * Forgotten Arcanist
 * Forgotten Cursebearer
 * Forgotten Illusionist
 * Forgotten Sage

Festival collectors

 * You could exchange these for various party, alcohol, and sugar items during the Farewell to Gaile event in 2008.