Derek13

I've been warned and scolded for asking about use of chemical rust removers as they are too abrasive and can devalue and ruin the blades. I'll pick up some alcohol and oil today and see where that gets me at least.

Looks like I have some googling and research to do. Thanks for the starting point. I'm not concerned if it isn't considered quality, just happy to have found it and want to take proper care of it.

Well I can't say I expected it to possibly be that old. You're saying possibly 500 odd years old? I found it yesterday and have been trying to educate myself as fast as possible. Would you mind expanding on your thoughts or what identifies as late Muromachi period?

I've been advised to use isopropyl alcohol then mineral oil or even renaissance wax to control the rust. Would you agree? These are the best I can do as far as closeups of the worst areas of the blade. Do you have any advice on treating the tsuba's rust? Thank you for your response and help!

As far as I know my grandpa brought this back from ww2. I've just come across it looking through his barn. It's most likely been sitting there out of sight and mind for nearly 80 years. I believe it to be a mumei, as I can't find a signature or markings on the tang. It's also quite rusted since the handle was barely held together with tape. Unfortunately, I know it's in rough shape and I've been advised to leave the care to the professionals. So I'm here hoping to learn anything I can about this.