This is a real beast of a grenade & that's saying something because most Austro-Hungarian jobs are chunky.Weighing in at 1.3 kg. I know very little about it other than it being described as a 'Jam Pot' on account of its shape I imagine. A great addition to my Austro-Hungarian grenade collection now standing at 9 pieces.
You can't beat a belt hook
Manufacturers initials I reckon.
It does have a safety cap but its beyond restoration. A pattern though for sure.
Size comparison to the more common 'Heavy Schwere'