German WW2 parachute mine, now located in the Imperial War Museum, London.
"Meant for use at sea, this 1000kg mine was dropped over land. When it hit the ground a 25 second fuze started."
Date: 1940s
https://www.iwm.org.uk/collections/item/object/30111634
83 photos taken in September 2020 with a Sony a6000 and processed in Reality Capture.