Copper Crimson Skull Coin

What drops it

 * Level 3 Crimson Skull
 * Crimson Skull Raider
 * Crimson Skull Mender
 * Crimson Skull Mesmer
 * Crimson Skull Ritualist
 * Level 6 Crimson Skull Bosses
 * Jin the Skull Bow
 * Yingko the Skull Claw

Festival collectors

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