UBB.threads Forums General Militaria Flags, Field Gear, and Miscellaneous Militaria and Regalia Forum Grenade Box (Wurfgranaten)

I picked up this ammunition box which I believe was for German WW2 grenades of some type. Could someone confirm what sort of grenades were stored in the box and whether its WW2 era. Here are some pics.

Thanks

WW 1 German.
This box contained grenades for the Granatenwerfer 1915. Quite a rare find. And in great condition for being over 90 years old