Looks to be a Radio earthing spike
It's a ff33 telephone spike used with single line connections......
Unfortunately the connections are gone on the spike, but the holster alone is somewhat difficult to find....
Here a picture of mine
By coincidence I've just bought one of these spikes in complete but 'relic' condition for only 9 Euros. It's almost harder to find these than the FF33 itself....
still a nice find.
Thank you very much for sending pics & information spike in action picture is awesome!
Typical German efficiency ( or over engineering ) for something that a bent coathanger would do equally as good a job at .......
" When you're chewing on life's gristle, don't grumble, give a whistle "
Now, now Dan! Actually this little bugger is well designed to get deep into the ground for efficient grounding. You will note the ground stake has holes in that let moist soil inside to make a good ground as well. In a pinch, I'd guess they make a good defensive weapon too! NH