Unknown grenade

[Zdenek]

Hi Guys.
Anyone seen this type of practice grenade before?
High is 84 mm, diameter is 53 mm.weight 378 g,
original colour is black ???
Any info will be helpful.

Cheers Zdenek

 

[pointblank0]

I can't be sure but it looks like an unfinished French F1.

 

[Trenchwarfare]

Looks kinda like the grenade on "Robocop".:tinysmile_hmm_t: