Japanese flag in original manufacture tube?

[tthen]

Hello all,

Hopefully the title is not misleading. I don't really know if there is an original cardboard tube. I recently picked up this flag and it was in this tube. Maybe something a serviceman made to protect the flag. The flag itself doesn't seem too rare other than the fact it hasn't been written on. The flag size is approximately 43"x29" and appears to be made of silk. The tube is 11" long and is 2" in diameter.

Any thoughts and possible value.

Thanks

Tom

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