I need some help from someone who has good knowledge on WWII era officers swords. To the best of my own understanding, I'm guessing this is a mass-produced Shin-gunto. I base this on the leather covered black saya and the look of the ornate sarute. It allegedly belonged to a sergeant who carried it in WWII. I wish I had better, more close-up shots of the blade but this is not my sword. Any insight anyone can provide is much appreciated.