Robean

Thanks for the replies & info. I guess the sword was made the same time as the tsuba, does anyone know when Kōfu-jū Tsuneyuki was around? I'm struggling finding anything. How/ what am i best cleaning it with? Someone said to neutralise the red rust? How should i go about this or is it best to be left? Can anyone tell me what it's worth roughly? Not that I'm wanting to sell it but more so if it would be an idea to insure it. Thanks 😊

Hi, I've inherited this sword from my grandfather and I would love to know if anyone can tell me anything about it please? Age? Worth? If i should clean it up? How to clean it up? Etc..