I was recently looking up a weapon called a 'Sang Kauw.' I am, however, unable to find any actual pictures or videos of one, only written references (though I've found a number of those). I believe that the idea of the weapon is sort of a double-sided spear with some sort of guard near the center - you can see a description and sketch here (it's near the bottom right in the picture). Anyway, my question is, is this actually a real weapon?

I feel like there might have been a photograph in George Cameron Stone's book, but I can't quite recall for sure. Anybody have any evidence one way or the other?