That cent once had a nickel glued to it. That's old adhesive with and impression of a nickel. Not a mint error of any kind.
So someone glued it and put it in a vise or clamp to create the pressed in look. I can feel the intentions and ridges. Just inquiring how it might have been done. Thanks in advance.
Strange as it is people do dumb things like this. If you ever have a coin, any coin and the letters or numbers are backwards it’s damaged. Nothing in the minting process can produce backward features.
It's so easy you can do it yourself. Take a Cent and a Nickel and glue them together. Wait until the glue dries and pry them apart. One or both the coins will still have the adhesive stuck on with an incused and backwards image. No vise or clamp needed
I wasn’t referring to mint error coins since the OP’s is a not an error, just made to look like one after it left the mint. Please bare with me as I’m having trouble thinking and processing things. My doctor thinks I may have suffered a stroke when my BP landed me in the hose last March. As always, please correct me if I’m wrong or didn’t state it correctly.
This can happen in those processing plants that glue coins to inserts for advertisements. I'm sure that we have all received ads with coins glued to them. Here is some glue I removed from a dime and a penny. Plus the coins as they were glued to an ad.
They wouldn't need to press it, the glue just fills in around the letters. They didn't necessarily do it intentionally.