Gentlemen, thank you for your helpful replies. I think the Kyo-shoami seems most likely, as the scoring on the edges of the wings and the cross hatching of the beaks and bodies for nunome seem contemporary (but who knows). As well, after looking at mimi's of ko-shoami, they seem more half rounded, not quite the same as this tsuba which has a more abrupt edge.. The tsuba does look rustic, with breaks in the iron and laminations, but maybe it was made in a more rural shop as Florian suggests. Steve, regarding folding, please give me a few days and I'll take pictures of different type folds and send them on. Thank you again everyone for your input, John. .