M250. Iron sukashi tsuba. 8 x 8.3 x .6 cm. The nakago hitsu-ana is .9 x 2.7 cm. When I 1st received this tsuba I was convinced that it is a work by the 3rd generation Kanshiro Nishigaki. One of my pictures shows it next to a page, 3rd Kanshiro, from Ito Mitsuru’s book on the school: so similar.