Thank you Brian.
So, it appears that I have a katana length blade but with a tachi style (two kurigata) scabbard? There is a single mekugi and multiple seppa (two small ones above the habaki, a larger one, the tsuba, another large one, another small one and then the fuchi. The tsuba and seppa are loose when the blade has been drawn. Am I missing something (another seppa perhaps) or is the mekugi in the wrong hole in the nakago?
Thanks in advance. I find all of this fascinating.
Alex