What's going on with these Lincolns?

OK, you already knew my answer. So what's your real question ? Would it affect the grade in the opinion of the TPGs ?

According to their own standards, it may even prevent the coin from getting a grade -

93|N-3 Planchet Flaw - Metal impurity or defect in the planchet –
depends on severity

Given that a defective planchet, (and there's no doubt that's what this is, a defective planchet), can even prevent a coin from grading at all, there's no way that a defective planchet CANNOT affect the grade. So their answer has to be the same as mine - a definite yes.

The question then becomes how much ? And you guys know as well as I do that their vagaries are unknowable, so there's no way to even guess with any degree of accuracy.

As for me, well, I think I'd call the '82 a 62 and the '87 no grade as its issues pretty much cover the entire coin.

 

There is one thing and only one thing that ever makes a coin, any coin, AU - and that is wear.

Things like contact marks, hits, dings, hairlines, minor scratches - a coin can literally be covered with them and that coin will still be considered MS, and justly so. It is only when a coin has wear that the grade of a coin is lowered below MS.

There are however many things that can make a coin ungradeable - and that means no grade at all. Here is a list of them.

82 Filed Rims Rim(s) and/or edge is filed.

83 Peeling Lamination Potential for sealing damage.

84 Holed and/or Plugged Any filled or non-filled hole.

86 No Opinion – our experts are unable to determine a coin’s authenticity –
fee not refunded

87 Not Eligible For Service Selected – the coin is too valuable for the
chosen service level – fee refunded

90 Questionable Authenticity – the coin is most likely a counterfeit.

91|N-1 Questionable/Artificial Toning (or Questionable Color for copper)

92|N-2 Cleaned – surface damage due to a harsh, abrasive cleaning

93|N-3 Planchet Flaw - Metal impurity or defect in the planchet –
depends on severity

94|N-4 Altered Surface - Whizzed, harsh cleaning, thumbed over
(using a pasty substance to cover defects or alter the appearance).

95|N-5 Scratch - depends on the severity of the scratch. Rim dent.

96|N-6 No Service – coins we do not certify (i.e. medals, some privately
made issues, etc.) or cannot certify (i.e. over-sized coins)

97|N-7 Environmental Damage – i.e. corrosion, coating (lacquer),
excessively heavy toning, etc.

98|N-8 Damage – deliberate surface damage, i.e. graffiti, spot(s) removed,
etc. – depends on severity

99|N-9 PVC (Poly-Vinyl-Chloride) – a plasticizer used to produce vinyl that
will leach out of the holder and onto the coin, eventually damaging the
surfaces.

Now these things that make a coin ungradeable were not defined or established by the TPGs, they were defined and established, and accepted by the numismatic community as being valid reasons for making a coin ungradeable long before the TPGs ever existed.

And if one wishes to disagree with these principles, well, that's up to the individual I guess. But if you do, then you at least must give some consideration as to determining what standards you do grade coins by.