Evening all! I picked up a 3 piece set of uncirculated 1943 Steel cents. One of them has a weird indent or void on the reverse near the bottom of the coin. I apologize in advance for the pictures, I took them through the packaging they are in so they aren't great but I think you'll be able to see what I'm talking about. Is this something common with these steel cents? I've never had any before so got me curious. What caused it? Was it just the nature of the reprocessed steel? Or did something happen during the minting process or plating process.