Wow!! Thanks everyone for your help. Your deciphering skills are incredible, and your generosity is helping me is duly noted. Here is a better picture of the signature, as well as some photographs of the tsuba and other parts. Is there any chance that any of those are original to the piece, or do they all looks like later additions? Cheers!
I recently acquired this sword from an interesting, old estate. I have been trying to make out the signature on the blade, without luck. Any suggestions for getting a good rubbing of it, even though the part of the blade with the signature is heavily oxidized? Thanks for your help!