The only reason i used photoshop is because it's kind of hard to make out the etchings, most of which are quite faded...many can only be seen well when the blade is turned in specific directions to catch the light. I used tools like sharpen and unsharp mask, and some other variations and light levels to bring it out more, because with my lack of ability to recognize Japanese writing, i was hoping it would be easier for you guys to see and understand what kanji it was. i'll post non-altered photos for you this evening, along with pics of what the blade under the habaki.
by the way, i want to thank you all for taking interest and schooling me with my sword. It's fascinating me more and more.
The sword belonged to a distant relative, who was either a sailor or in the navy probably during the korean war, and he brought it home during his overseas travel. I found it when the family was clearing out the house, and no one had any stories to tell about it, unfortunately. i'm in the dark on this .