Reminds me of one of the unloved/unwanted faces from Goosebumps: The Haunted Mask
Doesn't look like it's supposed to be part of the piece and doubt it's my screen ...
how come there are vertical lines on the forehead (right side, just above the brow)?
Right side, meaning the right for Boilgr... not our right, which would be our left if you're looking for the lines