This mug is from The Beak and Barrel, a Pirates of the Caribbean themed bar located inside Walt Disney World’s Magic Kingdom.
It is modeled after a pirate skull wearing a black eyepatch and a Jack Sparrow styled red head bandana with gold beads.
It is missing the lower jaw and the upper jaw has a gold tooth.
The mug is served with a lounge-exclusive drink, the "Plunderer’s Punch", which is made from Kraken Black Spiced Rum, blackberry, vanilla, and a hint of citrus.