Taking advantage of Steven good advise, I have check if this kozuka was on the Victoria and Albert Museum Website. Under the reference M.2144-1931 (Reference I got from the Arts of the Japanese Sword" of B.W. Robinson plate 81,) unfortunately there is no picture..... but the description is now ISHIGURO school (https://collections.vam.ac.uk/item/O464344/kozuka/)... Kyle's opinion was in the right direction... Thank you both of you.