Standard-issue Japanese Type 97 hand grenade, 4 in. tall and with a 2.5 in. dia., used by the Imperial Japanese Army and the Special Naval Landing Forces. The grenade features a cylindrical body with grooved segments, which rupture into many fragments of shrapnel upon detonation, with a brass striker tube and safety pin at the top. The grenade was detonated by screwing down the firing pin, pulling the safety pin, and then striking the cap against a rock, helmet, or other hard surface. The striker is absent, and the grenade has been rendered inert, but retains the striker tube and safety pin. Etched at the top of the grenade is the date ‘April – 1 – 1945’, further marked ‘GUAM’, clearly indicating this relic was present during the fighting between Japan and the U.S. in Guam. Shows overall oxidation, else very good.