I found this yesterday there appears to be a coin embedded in this rust. To Me it doesn't look like a penny or an IHP. Could someone please give me some advice on how to remove this coin without damaging it. I considered small chisel and hammer but I don't know if that's a good idea.
My first though is its a button with a steel back, which is why its encrusted in rust. I'd just pick at the rust or soak a bit in water to loosen the rust. A hammer/chisel might cause damage so I would use wood or plastic to pick at it. Post picks when you get it out of that rust! I hope its something good!