help picking. My grandpa became a vietnam-era artillery captain and kept this as a paper weight his complete life.

PTTF, powder instruct time fuze. Used for air burst or ejection (feel illumination rounds) projectiles or mortars. There isn’t any banana nonetheless it feels like a person already identified it as a larger artillery fuze.

additionally, while I don’t advocate any one disassemble this type of factor unless you understand it safe, seeing that you already did i will let you know that it’s inert and you do not should agonize.