This is what I believe to be a WWII bring back wrapped in leather with copper underneath the leather. It has no mekugi-ana. It says Tian xin or Tenshin. Kanji has multiple meanings but one of the them that keeps coming up is heavens heart. (or that's at least what I think it says) and says the date (Showa) on the other. I was wondering if someone could translate the date also can someone tell me if this a gift shop sword, made for battle, or a fake. Any information at all really would be greatly appreciated. Thank you for your time.
Point of this post is for personal knowledge of the item in my possession.