I am pretty sure this is post mint because the chance of me finding an error coin this old seems low to me. Anyway, it doesnt look like a scratch, so any ideas what happened to it? (The thing on the cheek, scanner can pick up a lot more scratches then I can.) Also the thing on her cheek is poking out of her cheek, not into. So I am 90% sure it isnt a scratch.
Could be from an automatic counting machine. Those things tend to make fairly odd scratches and gouges on most coins.
There was a kid's bank in the 60s that caused that kind of damage to any coin put in it. I have several coins with that central swirled damage on them.