Trying to figure out what era my flashlight is from

if I’m correct, it’s a Fulton MX-911/U flashlight, but I’m trying to figure out what era it may be from. i inherited it from my grandfather who was a veteran, but he died when I was just 3, so I don’t have much info on this. so i was wondering if anyone here does have info on what year it may be from. I don’t know much about flashlights, so thats also why I was asking.