Helmet mask

very small, teardrop-shaped face; small smiling mouth; narrow eyes with half-circles beneath them; small nose; C-shaped ears; elaborate hat or hairstyle with top element with four vertical protrusions; strap-like element around back and sides of head hold down four vertical elements; hair/hat decorated overall with incised designs of radiating arcs, grids; lines, radiating squares and triangular shapes; dark brown patina