Coins get put in cup holders where they are spilled on and left; purses with a variety of stuff and an unlimited amount of other ways to damage the surface. And then they spend it becz it’s srill worth 10 cents.
I believe the correct answer would be - maybe. If that dime were sent in for grading I'm fairly certain it would designated a problem coin, but because it is scratched, not because of environmental damage. Below are the descriptions issued by PCGS for the problem coin designations. 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. As you can see Environmental Damage, #97 covers a lot of ground. So much that they don't bother to list all of the possible causes/reasons, instead using etc. And environmental damage also has the severity aspect involved even though they don't state it outright. In other words it's always kind of a judgement call. Personally, I don't think that first dime is anywhere near bad enough to be labeled environmental damage. The 2nd one however is.
I'd spend 'em both if it were me as there is nothing that comes even remotely close to making either one worth keeping for your collection. Modern dimes exist by the tens, hundreds of millions and fairly nice ones are pretty easy to find. So there is no need to keep coins like those.
I dont know anything about the black coins, just look a little weathered. Years ago when there were quarter and nickle slot machines you could find some random blue painted ones that came out of the machine. That would give you a sense of how often that matching paid out the portion of coins put in.
