CONGRADULATIONS ON A RARE FIND!
EVEN RELATIVY PLAIN DAYAK SPEARS SEEM TO BE IN VERY SHORT SUPPLY AS I HAVE NOT SEEN ONE FOR SALE YET. I SAW A NICE DISPLAY OF THEM IN THE MUSEUM IN KUCHING ,SARAWAK, THEY ARE DIFFERENT FROM THE MORE COMMON INDONESIAN AND MALAYSIAN SPEARS WHICH I SAW QUITE A FEW OF IN THE SHOPS BUT NO NATIVE DAYAK ONES. THE BLADES ARE LARGER AND DIFFERENT IN SHAPE, THEY ARE OFTEN MOUNTED TO THE SIDE OF THE SHAFT LIKE THE BLADES ON THE BLOWGUNS. DIFFERENT TRIBES HAD DIFFERENT FORMS AND MOUNTING METHODS, THEY ALSO HAD LONG SHAFTS CONSIDERING THE SIZE OF THE WARRIORS WHO USED THEM. I DON'T THINK ANY OF THE MUSEUMS EXAMPLES HAD ASO DESIGNS ON THE BLADES BUT IT MIGHT HAVE BEEN DISPLAYED WHERE THEY WERE NOT IN EVIDENCE. WHAT ARE THE MEASUREMENTS ON YOUR EXAMPLE?