Hey all, sorry for the horrendously late response time.
Thanks for all of the feedback, I appreciate all the input. As for observations, yes, the saya is made from aluminum. I've also read up on how to clean it, though already the sword looks like it was well-kept and cared for.
As for the pictures I said I'd take, I did disassemble the sword to get a few good shots of it, though only this one's really post-able with the whole file size limit on this board. It's all put back together now, but I do have a few other pictures on hand.
Note- While the sword looks like it has no hamon, at certain angles it's pretty clear, the blade's just polished fully. Also, picture quality I know isn't the best- Just working off an Iphone SE camera.
I'll definitely stick around on the forum, though. Seems like a cool place to learn about the history of these blades, and learning these kinds of things is definitely a hobby I enjoy.
Thanks again, folks.
- Joey S.