Found this in a farm field today, I assume it’s tractor related but I’d be curious to know what it was, most farming items I find in the Field are iron, this appears to be solid brass.
Grease cup cap from either a tractor or farm machinery of some sort. 2” grease cups were common on Fordson tractor rear axels but could of come from any number of farm related equipment.
Desertexplorer has it!! It's a greaser/cup from a very old tractor, engine or other machinery. The piece with the hole you see in the bottom is actually the broken lower half that had the threaded nipple .