Hey all!   I picked up this number with another katana about a week ago. After looking at ohmura (http://ohmura-study.net/212.html), I believe this to be "anti-rust gunto," the kind made with chromium alloyed steel during the wartime. I think this one is signed Takeyasu.   Some measurements:   Nagasa: 64.5 cm.   Sori: 1.7 cm. Moto-haba: 3.3 cm.  Saki-haba: 2.5 cm.  Moto-gasane: 0.8 cm.  Saki-gasane: 0.6 cm.     Please let me know if my assumptions are correct and what the probable