Hello, I've recently acquired an interest in Japanese swords although my knowledge is quite low, I bid on one and though it didnt reach the reserve I was sent an offer by the seller afterwards and was looking for thoughts/does it look authentic or a gimei? I only ask as i saw one with the same/similar signature posted here although as far as I know the signature was used by many different smiths. Just wondering if it'd be worth the $400~ it'd come out to after taxes and fees and if it is actually from the time period the seller claims (muromachi - momoyama period)