Recently received a sword that to me appears to be from Japan from my grandfather who served in WWII. Looking to find as much about the sword as possible here given I have no background or expertise in the area. The signature on the tang is able to be seen in person but have had near impossible luck getting it to appear in an image. May have to try and hand copy the signature to paper to at least see if someone recognizes my poor attempt at copying it (not sure if that’s something I should try a