Hi Jussi, this thread from the start as been of great help to me. I cant comment on much but from what i know, 1st picture, first sword, similar to a sword further up in this post, an earlier sword, from what ive read. The other 2 look tensho, allthough the saya may have been relaquered at one point?. I would guess that the first sword on the 2nd picture isnt tensho, but momoyama, as you state, the other 2 look tensho to me. The rather short fuchi seems prominent on the tensho swords ive seen (finding one is a difficult), so does the hour glass shaped tsuka. As most of the pieces ive seen where laquered/shakudo it does give them a unique look, austere, is a word that as cropped up a lot, sorry to repeat. I think Grey may have a copy of the book you mention, id have it myself but now skint due to reading this post :lol:
Everything does seem to be put in boxes though which i think seems to be a mistake, ive read iron tsuba where favoured, probably where for strength but there is was also a lot of shakudo and yamagane tsuba around in that period, so taking all that into account, there must be variations in this style.
Every kind of material must have been used?, iron, copper, yamagane, bronze etc, in times of war materials can be lacking so i suppose a lot of the time its what ever materials you can get your hands on, aswell as the potential for mixing and matching parts from broken swords.
So, in a way to try and some it all up is an impossible mission, but the basics are obvious from this post.
Alex.