This is an African knobkerrie which has a weighted, rounded ball top. 

These sticks are traditionally made and used in South Africa by the Khoisan people. 

The stick is made from solid hardwood, strong and perfect for use. 

Measurements; 
Length - 99cm 
Diameter of the top - 8.3cm 
Diameter of the shaft under the top - 2.2cm 
Weight - 543g 
 
Very good condition, some slight use marks consistent with age.