Xander, Thank you for the translation! There are no other stamps anywhere.
Bruce, Thank you for all the information! I have already been poking around on that site, lots of fantastically detailed information! Do you think I should repost this over in the Nihonto forum updated with the information on the maker?
Also, what is the significance of the painted side of the tang? Sorry for all of the questions guys, I really appreciate all of the help!