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Maybe Willow.
I doubt it. The spacing of the rib stiching gives it away. If it was from a fuselage you would have marks from fuselage stringers which are generally closer together than wing ribs.Could be from the fuselage instead.
Thanks but read on...Wow, thanks for the education!
Hinomaru of -
Fuselage: 1,024 mm(40.32 inches)
For your knowledge, the most Japanese aircraft that survived the war was this K5Y.
Biplanes of this type were everywhere at that time.