need help with an arisaka bayonet

[surpman1911]

I didn't expect to be walking out of a vinyl record store with an original japanese arisaka bayonet but i couldn't pass it up for $30. The guy who i bought it from said it was his uncles who brought it back from WWII along with a few other items. The bayonet itself has little rust but the scabbard has a lot of tarnish on it, however, there is a scratch on it that went through the tarnish and I can see that it is made of brass (see pictures). I can also see brass on the inside of the scabbard. I was wondering if these bayonets are commonly found with brass scabbards and what it might be worth. I was also wondering if removing the tarnish on the scabbard would devalue it as I know it most often does. Also, what is the maker of this bayonet it is one large circle with a smaller circle inside and an even smaller cirlcle below that one. Sorry for the bad lighting on the pictures. They came out smaller that I expected
thanks


LARGER PICTURES IN REPLY #4

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