My great uncle picked this up at the battle of biak. It doesn’t have any markings or serial numbers. It’s mumei and has a faint hamon on it. Trying to figure out age of sword and type.
Can anyone tell me anything about this sword. I can take more pictures. My great uncle got this in the battle of biak. It’s mumei and has no markings of any kind. It’s got a faint hamonI