Mysterious lump of metal found under my lawn, not magnetic, no identifying marks : r/whatisthisthing

Round Ball, smooth, no seams or attachment points. Heavy for its

Foot long hollow metal cylinder showed up in backyard within the

Metal (?) turd found in a field in Kent, UK. : r/whatisthisthing

Heavy, rusted metal object found in backyard in NY. Approximately

Found this pretty heavy metal thing in my backyard. It's about 15

Metal bar with USA on it - weighs 176g and magnet works on it

What is this metal object? Found in old farmland in Northwest

This intricate, flat piece of metal (most likely copper) found metal

Found this in my yard buried but not very deep. The bottom part

Any ideas on this rock? It's heavy, sounds like metal when you tap