Hope those brown traces are just stain & not rust.
Those look to me like the weight above the hook on a crane. Around 100lbs would be about right for a small one.View attachment 7344
Me too. Came home Tuesday and these were sitting in front of my shop door. No note or explanation or a clue what it was made, but looks like it could be a counter weight for a tractor or something. Good to have friends. Weighed one and it was slightly over 50 lbs. Scratch test says they are pretty soft. Anybody have an idea what they are used for?