1773 5 Kopeks For Your Grading Opinion

I am thinking this is planchet damage, rather than coin damage, and I cheated, so I know the grade, which is about what I would have guessed.

I think for this one we have a damaged planchet, but a coin that was pretty well struck, then barely circulated. The detail in the first photo is super. A bit less in the second.

For the 1775, it is a bit tougher to tell from the photos. If the damage is planchet damage (and not later corrosion), and the strike is weak, it might have gotten the same grade, even though it looks much less appealing (I think this is the point made by Jan1may, who has certainly seen many of these). The older the coin, the more you see anomalies like this where the grade doesn't correlate with eye appeal. As in this case:
http://goccf.com/t/334675&SearchTerms=poland