Christmas Clams $50 a Pound

 is a limited non-premium decoration released on December 9, 2015, during the Winter 2015 Event as part of the crafting system.

It returned on December 22, 2017 during The Invasion Before Christmas 2017 Event as a premium item purchased in the store.

Trivia

 * Only one could be crafted.
 * It changed to a premium item in The Invasion Before Christmas 2017 Event.