Ok, I have run across this thing and I'm trying to figure out what this is. It is a wooden box/tube thing with a wool lining. then on the outside there's like another tube with no lining. The wood thing then fits in a stiff canvas box or case. The case has a shoulder strap and a loop to go on a belt, I assume. There are some papers inside. They have Japanese writing on them as does the bottom of the canvas case with a star in a circle. Can anyone tell me what this is? Thank you!