The majority of swords on E.bay described as "Japanese" will be fakes,blatant fakes and sadly from China. You will not buy a genuine sword for £40 .........£400 to $5000 yes. Simple rules to follow............
I have a sword on ebay at the moment, my opinion is that the blade is Late Koto period. One potential buyer asked if I am an expert as he felt that the sword was of a later period. No, not an "Expert", have...