Guys all I can say is this - trying to find some explanation for marks and scratches like that being strike related is really reaching. For one thing planchet marks do not remain on the high parts but on the low areas, metal flow wipes out any planchet marks on high points. Then you can try and explain to me how those scratches on the C, E and T of CENT stop abruptly and go from a scratched up area to a perfectly smooth area start faint on the right and then get heavier and worse gpoin left and then taper off again to nothing - which is exactly how damage occurs and looks every single time. I'm sorry, but this really seems like you are willing to ignore what you eyes see before you and instead take the word of a TPG just because they slabbed it. I'm pretty much convinced now they must have a bunch of idiots working for them now a days.
I can no more explain that to you than you can explain how this big flat surface apparently rubbed the high points of Abe's bust, but still managed to get down next to the rim without hitting the rim; got the field around the E (in ONE), but still missed the E; got the field around STATES and got the letters also. We are guessing, Doug. I know how surfaces abrade other surfaces. I cannot picture anything contacting/not contacting all of those areas. I (and I doubt even you) can come close to explaining all of the physics going on during the striking process. All I am saying is that my suspicions are going to the unknown.
I choose to not vote in this one. I'm confused by the coin. If I had to guess, I'd guess 64, but I think I'm low.
BTW, if planchet flaws/marks only remain on the low points, I guess that means both Lehigh and Mike were wrong in their discussion of Jeffersons then. http://www.cointalk.com/t101077/#post852663 All the planchet marks I have seen on Lincolns are on Abe's shoulder and the O in ONE - both high points. It is the low points that get pressed the hardest and thus most likely to move. i.e. metal flow.
Yes, I think they were very wrong. I agree that you are willing to accept those as planchet marks. But I do not for 1 second agree that they are planchet marks. Those are contact marks. But that is not how it works. I have explained in many threads how metal flows, but it seems it is either always forgotten or ignored. Guess I'll try one more time. When a coin is struck is is being squeezed between two opposing forces - the dies. Now the high points of the die are the fields and these high points come into contact with the planchet - the planchet is flat except for the outer edge that has been run through the upset mill. The first portion of the planchet that comes into contact with the dies are where the fields of the dies are. These areas are then pushed inwards towards the center of the planchet (if you were looking at it edge on) from two opposing directions at the same time. Now the metal of the planchet that the fields of the die is touching does not move at all, there is no metal flow there on the surface. The metal flow occurs in the center of the planchet. I don't mean the center of the circle either, I mean the center of the planchet in it's thickness. In other words the metal that is in between the top layer of the planchet and the bottom layer of the planchet is the metal that is moving. And it is moving because it is being squeezed at a great pressure. And as that metal moves it bubbles up and fills the areas in the dies that are holes. So any marks that may have been on the planchet that correspond to a hole in the die are obliterated by this bubbling up the metal as it flows to fill those holes. That's why there cannot be planchet marks on the high point of a coin. It's physically impossible. Now only at the very last stages of the strike can the metal of the planchet that is actually touching the fields of the die move or flow. And even then it more stretches than flows for there is little to nothing left to fill in the dies. And the most movement that occurs in this metal will be at the edges of the holes in the die, not at the center of the fields. That metal moves or flows the least of all. Where people make their mistake is that they think of the metal on the top and the bottom of the planchet as being the metal that flows. But this is wrong. It is the metal on the inside, the metal that cannot be seen or touched by anything that is moving. It happens the same way when you squeeze anything - the material in the center is what moves, not the material that actually has the pressure upon it.
You are so wrong. One simple example that cannot be debated that shoots a hole in your argument: Adjustment marks. By your explanation (which is incorrect in the way it describes the way metal flows into a die, IMO), they would be obliterated. Yet they are not -- even on high points. While much of your explanation holds truth, the fact is that there are aspects of a coin's planchet that are simply "pushed" into the die and don't flow. When these areas aren't fully impressed bythe die, then the imperfections from the planchet often show through in the struck coin. It was, IMO, the case in the Jeffs, and it might be the case with the Lincoln above. Frankly, I don't follow Lincoln's closely enough to be sure, much less the 2010 issue, but you sure do see this plainly evident in the earlier copper which I do follow quite closely, as you do with the Jeff (another series I've collected for a long time). Bottom line: Planchet characteristics do show through in the as-struck coin. It sill surprises me that a numismatist of your experience could be so stalwart in defending your (IMO incorrect) position.
My main argument was with the line "For one thing planchet marks do not remain on the high parts but on the low areas, metal flow wipes out any planchet marks on high points." Since you have agreed that that line was in error, that covers my post #26. As for the rest of your post, the only thing I will add is that liquids behave differently than solids. Since the surfaces melt..... As for the source of the marks, I just find it inconceivable that those marks came from any external source. How you can think something is capable of scratching the bust, getting into the gap between the rim and the bust, but not demolish the rim escapes me. BTW, they go right down the edge of the bust into the gap without interruption.
p.s. if this lincoln's been scratched on the high points, why is his cheek not scratched? I'll tell you why: Because they are not scratches. Don't believe me? Fine, take a lincoln and put it on some concrete and put your foot on it and scrape it. Note where you see scratches. Report back what you find. If someone would send me a 2010 penny I'll happily do it and post my results -- those suckers are rare around here.
I have not and do not agree that that statement was in error. Not sure what this comment is addressing, but OK. So because you don't know what caused the marks then they must be planchet marks huh ? The logic of that reasoning escapes me.
That is what I am saying. It is like a post turtle. If you see a turtle sitting on top of a fence post, you may not know how it got there, but you can be positive that it did not crawl up there by itself. How can something be dragged across the surfaces to scratch them on the lowest levels and the intermediate levels, but totally miss the highest levels? How can something scratch continuously from the field, up the edge of the bust and them across the bust without gaps at the angles? I just wish I had one of those USB microscopes. I am pretty sure I could show you that those scratches are not on the surface.
Quite easily actually, all that would be needed is for it to come into contact with an uneven surface.
In the Red Books Dictionary of grading terms, they say that adjustment marks are made prior to striking.
And miss the one that I find impossible to miss - the rim. If you can do that, I want you to show me how to clean between the wheats without touching the tops of the wheat lines.