Recovered on various place in Croatia and Bosnia-Herzegovina.
Concrete-and-shrapnel casting with a H.E. filling.
The tin plate at the front is held by the strips of metal, behind it it carries the shrapnel charge.

The one on the photo has a 40mm hole in the back as a detonator well.

Height : 200mm
Depth : 140mm
Trapezium form from 320mm to 240mm.

Photo © M. Jochoms