Antique Borneo Idonesian Headhunter's Shamanic Dance Staff Dayak Bahau 19th cent

This is a rare and stunning antique Borneo Dayak ceremonial staff / club. It is hand carved and appears to be 19th century or earlier. It was collected by Americans living in Borneo in the 1930s. It appears to be ironwood and the wood is incredibly hard and heavy. It measures 48 1/4" in overall height. Thank you and have a great day.