Extremely Rare Nightmare Before Christmas Clock. The jack skelington is unglued and Im not sure if clock works. The item "Extremely Rare Nightmare Before Christmas Clock" is in sale since Saturday, February 6, 2021. This item is in the category "Collectibles\Disneyana\Contemporary (1968-Now)\Figurines\Nightmare Before Christmas". The seller is "becur_28" and is located in Las Vegas, Nevada.