Regarding marks. Photo is not very clear. It seems to be an NCO gunto type 95 (initial type with painted aluminium hilt and brass aoi-shaped guard). Marks from right to left: - star - Tokyo First Army Arsenal trademark (April 1940-1945) - character "To" - Tokyo First Army Arsenal inspection mark. The stamp is not of good quality. The same character must be on the blade on the right sider of a number. -Suya Shoten Co., Ltd. - private sector company trademark (mark is not so clear on the photo). Best regards, Igor