I know it's not supposed to exist but it really does not look like post mint damage it actually looks like the 5 and the 0..what do all see??
orry, but it’s damage. Notice how it doesn’t look anything like a 0 on a 1970. That’s how you know it can’t possibly be an overdate (besides the obvious, almost nonexistent probability of the mint reusing a 5 year old die)