Good evening. I having been doing some research on a Japanese rifle and other historical WW2 memorabilia I inherited from my great grandfather. We all know how stories and secondary sources are passed down from generation to generation. I have found a lot of information on the rifle based on the markings but have not been very successful on the other items. My focus now is on a flag that I received. I believe it to be a WW2 Japanese good luck flag but not 100 percent sure. Any and all information is appreciated.