This headpiece with its janus form–each figure baring its teeth–and its surmounting animal–apparently a monkey–resembles certain Ijo bush spirit images. On the other hand, the overall softness and delicacy of the features might indicate an origin among neighboring Edo or Igbo peoples on the northeastern fringes of the Delta.
Source: Anderson, Martha G. and Peek, Philip M. ed. (2002): “Ways of the Rivers: Arts and Environment of the Niger Delta”‚ Los Angeles, UCLA Fowler Museum of Cultural History. page 151