2020 D kennedy question

I feel like I know the answer to this, but want to check as I'm completely new to reviewing coins for potential varieties, errors, etc [and ill try not to do this with every little scratch or bump i find]
is this PMD? this is 1 from a bag of 200 bought earlier this year
on a similar line of thought, how quickly are varieties, errors, etc usually discovered on new[ish] releases? and what is the threshold for these discoveries to be confirmed? ie - do there need to be multiple examples inspected and confirmed by official grading institutions, or is the threshold not that high?
thanks for schooling a newbie - appreciate this community
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Dinged by another half dollar.
yeah, that's a contact mark
bags generally have more "issues" than rolls, but rolls aren't perfect either.
thanks JBK - I figured, but good to have confirmation
have never bought a bag of 200 and that was def something I prob should've expected; the coin-to-coin damage, but was still surprised when opening bag to see how terrible these bagged kennedys look - prob not going for that again 😅
just started buying rolls over past couple years, and haven't had the heart to break into them to see how they stack up against the bagged coins - thanks for the insight, MsMorrisine
Definitely PMD, very common on bagged coins.... Rolls not so much if from the Mint. Cheers, RickO
post mint damage
thanks, RickO - yessir - direct from the mint
something else I've noticed all over the D kennedys was something I originally perceived as some oil residue, but now appears to be some sort of very shallow imprint - i know still images are tough to give a great idea off of, but wondering if anyone can define what this phenomenon is - thanks again - always learn a lot from yall
Struck thru grease.
I my.own experience from past purchases of half dollar rolls and bags from the mint is that the D coins tend to look pretty good but the P coins are often dirty or dull.
on some rare occasions the 'grease" will still be present in some amount.
thanks JBK - what an eyesore that stuff is for surface appearance
if there are a bunch in the bag you can see the shape change between coins.
tried to nudge this stuff, but seemed to be all surface perturbances
the "grease" will be black to dark gray
I found the exact opposite on my recent 200 p,d bag - the Ds were covered in this strike through grease stuff; a majority of their surfaces were marred by the stuff - the Ps on the other hand looked much better
it's hit and mostly miss on strike-throughs. another set could be the opposite.
think ill be sticking to rolls from here on out - first bag was 😑
The grease is stuck to the die. After multiple high pressure strikes, it can get hard, especially if it picks up, miniscule metal shavings, dirt, dust, etc. Sometimes it will adhere to coin, as @MsMorrisine pointed out, but it was stuck to the die when it struck your coin. There is no grease on your coin, only the outline of the grease on the die. Eventually, it will fall off or be cleaned off if noticed.
IMO, you might have a better chance to find more interesting errors in bags. Coins that are rolled have to be stacked before they are inserted into the paper roll. Errors that cause the coin to be out of round such has off centers, broadstruck, and big clips, may jam the rolling machine. These would be more likely to pass through a counting machine and deposited directly into a bag. Granted, the probability of finding one of these is very small, but why decrease your odds. Just my opinion.
Also, all coins drop into large ballistic bags that hold thousands of coins after they are struck. From there, they will be processed for commerce. As the bag is filled and transported, there are lots of opportunities for bag marks. A small amount of the minted coins are sent to make the mint sold rolls and bags. Once again, just my opinion, but I think most of the bag marks are already present by the time they get to that step
Excellent point. These bags (and the dollar bags) might be the only chance for someone outside of a coin processing facility to find these types of errors.
Here is a lump of mint grease.
thanks for these points, hoopster - maybe I'll give a bag another shot in 2021 ☺