maybe linear plating blisters, if they will depress with a toothpick. The one above the T in Trust and beside the I in liberty, looks like almost split plate doubling just the plating didn't split, toothpick test and some pressure right on them, try to push down on them and see if they give at all, should clarify if it's plating blisters. If not that, maybe random die gouges, but looks to me like plating blisters. theres some small round blisters under the lincoln memorial reverse side also. given the whole, it leads me to believe just a poorly plated planchet based on the pictures here.
Thanks for the advice. With a toothpick these are solid ridges of which will not give under pressure or sideways force.
Thank you Fred ! If the lines wont budge under pressure or sideways force do you stick to that ? The line through the M appears to be solid. Thanks
I was thinking the same thing as Pete, although I would expect that it would be more involved than sparsely distributed.
Yes. I can get on board with this as a reason for the reverse and them not being able to be depressed. The scraps would, I think, need to be on the anvil die. Yes. This is plausible for those.
As far as I know, the anvil die was the reverse at the Philadelphia Mint in 1996. Beginning in 1997, and increasing in practice through 2001, I think there were some instances of the Reverse as the hammer Die at the Philadelphia Mint.
I don't like to highjack another thread, so I hope that @1827jim won't mind since it seems that this might be related. Pete, I have these 2007P Sac dollars with what appears to be feeder finger damage. Is it possible, that such damage could affect such a small area like this? I have ten of these coins left with the same marks. Chris
So the metal feeder finger which loads the planchet lightly gouged the die interesting stuff. Thank you all.
I suppose possible but doubt it. I am not at my computer now but have you checked for a possible die clash?
I’m pretty sure that when a feeder finger comes loose and is caught the die set is also changed and the coin hopper is checked and discarded. Once the finger shifts in its place it is done and no planchets advance onto the chamber. Here is what a feeder finger looks like. As someone that has worked for years in an industry that uses large platen presses you KNOW when something comes loose you can hear it almost immediately! I’m sure that it’s the same with coin presses and you’re going to hear it from across the coining floor. One thing is for sure something abraded that die set. I might have been a finger feeder. I vote for plating blisters. Reed.