I have what was decribed to me as a Japanese fuse from WWII. My father was a ordinance officer in the US Navy and it is my understanding that he received three fuses during his training. He gave me this one when I was a child. I assume it is safe as his career was as a safety engineer. I would appreciate any information about it. I was considering selling but have been told I cannot mail it and if I take it to a militaria show, they might confiscate it. I live in Texas, USA. Thank you.