Shrine stamps Hinomaru Yosegaki

Good day,

There are three stamps on a Hinomaru Yosegaki that I would like to identify. Does these stamps could allow to estimate the origin of the owner of the flag?

Thank you!

First one, right side, looks like 廣津 (Hirotsu). There is a place in Japan called Hirotsu, but its a tiny shrine in the middle of nowhere. There is also a place in Korea which used the same hanja/kanji characters. The character on the top left side is 四 ("four"), but that doesn't help me figure out the whole block.

Middle stamp is 雲仙 (Unzen), which is a location in Kyūshū .

I can't read the stamp on the bottom.

Thank you very much Majestic!

Would a picture of the flag help in the identification?

Regards

Yes, especially if there is any handwriting on it. Also, there is a small vertical crease across that first stamp. If that could be straightened out it might help also.

Here are the pictures.

Thank you for that. I can't get the stamps any further than what I've said above. They may not be shrine stamps (well, none of them say they are from a shrine, and usually the words "shrine" are included somewhere in the stamp). So they may be personal stamps of people.

The flag, as you might know, has the name of a calligraphy group on it ("Koimizu-kai"), and was presented to Mr. Yasuhara Nobuo, who would go on to become a calligraphy artist and author. It is dated April 10th, 1943. At the bottom are names, presumably of his fellow calligraphy enthusiasts. Written on the right side of the flag is a poem, but it would take some time for me to decipher it. Across the top is 盡忠報国 (Jinchū Hōkoku), which means basically to give your life for your country. To the immediate right of the red disc (and next to the poem) is the phrase "pray for good luck in battle".

No idea if it is authentic or not. Looks like its in great condition. Yasuhara Nobuo didn't die that long ago. Could be that his descendants are selling off some of his articles?

Thank you very much Majestic,

This is appreciated. I understand it had been signed by 14 persons. Is Mr Nobuo or the calligraphy group originate from Kyūshū ?

The calligraphy is beautiful.

Best regards,

Nobuo would be the given name. The family/surname is Yasuhara.
The orientation would be as below. It is indeed signed by 14 different people. I don't know if they originate from Kyūshū.
I'm not sure the stamp I mentioned above references the location in Kyushu. It is the name of a location/mountain in Kyushu, but it could also be someone's pen name. The location my be a red herring - forget about it for now.
And I'm not 100% in the "Hirotsu" either. The poetry group was a fairly known group, so it was probably centered in Tokyo or Kyoto /Osaka or another major urban area.