Help Yosegaki Hinomaru Authenticity

[fisherman04]

Hello everyone! Well I struck out twice on my first 2 pieces of Japanese history that were both faked. Hopefully 3rd time is the charm.

I would like to see if anyone might be able to translate some of the kanji and tell if this flag is authentic. If I need to take some different angle pictures please let me know.

Thanks!

 

[Majestic]

Right side, vertical writing: 祈武運長久 (Praying for good luck in battle)
Next to that: 川合實夫君 Kawai Saneo-kun (Name of recipient).
The rest are all names. Looks OK-ish to me. Hard to tell nowadays. Nothing obviously fake about it, although I am not a native speaker, and it is possible I can miss things that a native speaker wouldn't miss.

 

[fisherman04]

Thank you Majestic! I really appreciate you taking the time to look at this for me.