Mask of the Toothtaker (3.5e Equipment)
From D&D Wiki
Mask of the Toothtaker
This mask is composed of leather darker than midnight, with no apparent eyeholes, and a fiendish ear-to-ear grin of actual human teeth. It was handcrafted by a serial killer from the town of Harrisfordt known as the Toothtaker (named for their obsession with collecting victims' teeth).