identification/ tranlation help requested airplane parts

[Tino]

Hi guys,
I was told that these pieces were taken off a Japanese airplane and brought back by a Veteran.
I am curious what type of plane the pieces might have came off and what the reading means on the pieces.

I am sure I photographed the pieces upside down
Any help or information is appreciated.

Thanks,
Tino

[Tino]

backs

[Tino]

Another unidentified piece