Japanese dog tag

[stevo4361]

Hello,

    I haven't been actively collecting for a long time, and even when I was my interest was more in German medals and badges.  A friend of mine asked me to research a dog tag he received from a WW2 vet he know that recently passed away, served in the Pacific theater as an infantryman.  I know almost nothing about Japanese militaria, but doing some research online believe the "unit code" is 1128.  Other than that I don't know, other than it doesn't appear to have a blood type stamp, which isn't unusual for IJA tags.  The coins came with it as well, but believe I've found what they are, 2 Chinese "1 cash" coins from the late 1800s and a Japanese "1 mon" from the late 1600s.  Any input appreciated, thank you!

Steve