Hi... I have a question not about that specific blade but the name you gave it...
My Javanese Hokkien friend told me that where he's from, a gobang is a long machete. He said that when he lived in Java, some people would keep a sharp gobang around for fights and sometimes even let it get rusty because the rust can cause tetanus and that will kill the victim if the slashing did not...
But your gobang looks more like a sword/pedang or some sort...
