Kamba stone ball club - 63 cm
This is a very rare and unusual African club. The stone ball under the leather is a neolthic stone ball. It is for sure a very old culture element.
Maybe such stone ball clubs had more the character of dignity sign, than of weapons.
Sture Lagercrantz: Contribution to the ethnography of Africa; pg. 165, fig.39
http://www.africanarms.com/gallery?lagercrantz-stone-ball-club
Rütimeyer: S.250 ff Abb.10b