Thanks Rich, you are such an asset to the forum.  Is this smith well known? Did make primarily tantos or all forms of Japanese edged weapons?  I understand there is a rating for smiths, how does my smith rate?  
The condidtion of my tanto is outstanding (makes no sense to buy stuff in poor condition - right?) I think this will be a keeper for me for the next 20 years or so.  I now have to pick up a sword care kit 

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If anyone would specific scans of my tanto, just let me know and I'll post them.
Greg