Originally Posted by osakajoe
A bit tough but I think this I the closest I can get.
Masamune 24th generation
(note 広 is the way they right hiro today. The kanji on the knife is the old version)
Saku means made by or maker
Had to ask my colleague on this one and even with her knowledge if working at the knife museum she couldn't tell me that one kanji.
is anyone able to determine this one? from a non-descript ebay purchase. maybe a Tojiro? looks similar to some postings i have seen that were Tojiro