Was doing a plumbing job in downtown Knoxville,TN at the old Holston National bank at 531 Gay Street built in 1913 and the basement flooded so was in charge of junk removal too and found this item. I was told by employee it went with a huge safe that was located in the basement. Not sure what it’s made of a magnet does not stick to it and it’s heavy! Please message me if you can help me better identify this item thanks!