Those aren't errors. Those are post mint damage. So yes, there is significant negative value in those.
With evidence of planchet issues and lack of damage on the obverse, I'm not sure this is PMD. There's a lamination crack along the hair line by the cheekbone and at 10 o'clock, which is directly opposite one of the areas on the reverse, there's porosity. The areas on the reverse might be detached laminations.
