| Rare iron money of the Mambila or Chamba from the border of Cameroon/Nigeria.
Heavy corrosion.
Such objects were used for occasional but important transactions for example as bride price. At the wedding party, 3 to 5 were presented, later another 20 to 80 followed.
Lit.: "The Perfect Form - On the track of African Tribal Currency" - Robert Ballarini. Page 157 | 
