A very similar model at the Barois Museum => HERE
Interesting text borrowed from the Pompidou Center: Justice batons were used by the Dogon and their neighbors the Bozo living in the region of Sévaré, near Mopti, in Mali. The inhabitants of these regions called these objects "thieves' sticks". According to testimonies collected on site, this stick was handed over after judgment, during a dispute over the ownership of a property. The person carrying the "thieves' stick" on their shoulder had the right to come and go as they pleased and to enter wherever they pleased in order to recover the property that had been stolen from them. He was reputed to be invisible and no one would ever have dared to call out to him, or even raise their head to prevent him from doing what the customary judgment had commanded him to do.
See => HERE