I have a 380 years old Artefacts for sale used by the Kung people in the North West of Cameroon to drive away evil spirit, avert disaster, and heal the sick. When worn in dances, it serves the dancer for it's connotation of aggression to help the chief maintain order and control. This mask is believed to have been worn by the last chief dating about 74 years ago.
It was recently discovered in a shrine in 1971 and has since been protected by the chief's inner circle members until now that it has been put for sale. If interested let me know I will send some pictures.
We use respected laboratories to perform TL (thermo-luminescence) testing to confirm an item's age.