Arsenal question on my last ditch Arisaka

[**RD2**]

My last ditch arisaka type 99 is from the Toyo Kogyo arsenal, or so I think. It has a serial # of 305xx meaning it was just past the halfway point of the 57000 35th series that were ordered at the Toyo Kogyo arsenal. My question would be, is this indeed a Toyo Kogyo Arsenal rifle? I do believe it is a 35 Series rifle. It's the mark beside the Toyo mark that has me confused. Perhaps someone can help confirm the arsenal mark on this series 35 last ditch Arisaka. I have read that the 35 th series was manufactured from March 1945 to August 1945 when the factory was bombed.
Thanks,
Rick

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