This is a mug shaped like a small skull with no lower jaw and a rough textured exterior. They were produced in three consecutively numbered colorways within the same edition of 150 (#1-50 in Melon glaze, #51-100 in Banana glaze, #101-150 in Cinnamon glaze). However, this is one of 5 artist proofs, and as such, glaze colors vary and are unique.