I purchased this blade many, many years ago for a very good price. Unfortunately, the previous owners had inexpertly polished and sharpened the blade (it's quite dull now) to the point that the hamon is barely visible. I'm afraid I really don't know much about swords (I had a friend help me pick this one out from the pictures on ebay), so I'm not sure if having it professionally polished would be worth it, nor do I know any reputable or qualified swordsmiths. Any advice is appreciated, thanks! Here's a link to the photo album on picassa:
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pictures