Reward for a bit of digging.

[SimonJ]

I was visiting my sister in Kent and helping with a bit of digging in the garden. I turned this up and recognised the shape (even covered in mud), because I found one in the same garden about 50 years ago.

There was a searchlight battery on our land during the war, I expect the guns were not far away.

 

[Andysarmoury]

A nice No80 Mk VII dated 1917, good find.

 

[Darkman]

Possibly converted to AA use because of the wooden dowel plug in place of the percussion detonator

 

[AMMOTECHXT]

I wish I could find ornaments like that in my garden.