With the grenades now out in the Bombatorium, it's now time to try and get some unknowns identified. Any help is appreciated. The round grenade is a third smaller than an M67, has a pressed-in, threaded copper fuze well/liner like an M26, but a round hole in the base like a practice. In the last picture the grenade is sitting on a plastic ring for balance, the stick is hollow for a pull-string.