Discussion in 'Error Coins' started by SchwaVB57, Sep 24, 2020.
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I can't think of what could cause that during the proccess of adding the letters to the edge.
I am not ruling out PMD, but do not want to not catalog a possible edge error, if there.
How would an indented line get on the coin during the minting process? The blanks go through an upset mill that would remove any residual marks. Any marks on the planchet would be removed/reduced by the collar during striking. If it was caused by the collar, it would have to be a raised mark on the collar to produce an indented line on the edge. Same with the edge lettering process. Any defect would have to be raised on the lettering die. That would rule out a crack or die gouge.
The simplest explanation is that it’s either a bag mark or from the stacking/sorting/rolling equipment used by the outside vendor to roll the coins.
For P+D dollars, the coin is struck then they are run through an edge lettering machine after the strike in a 2 step process.
My opinion, this could be struck through debris in the edge lettering machine step,
But currently I can't confirm they are still doing it this way for the P and D mintmarked coins.
As I understood it, the circulation strikes and mint set examples P+D of edge lettered dollar coins were struck first for obverse and reverse in the press with a blank collar, then they are run through a 2nd machine that does the edge lettering.
and it's only a single step process for the proof coins, because the collar dies that put on the edge lettering at the same time, break so frequently the results are better for the proof edge lettering but it's a slower process to change the collar dies so much.
Found it, Coin news article:
"Dollar coins are processed through an extra step. They are made using two stand-alone coining presses which are not on the production lines. After the dollar coins are struck, they are quickly fed through a RS 50 machine which places the edge lettering on each coin. A die segment, like the one below, are inside the machine. Each coin is rolled over the lettered-groove on the die segment at a pace of 1000 coins per minute."
Until proven otherwise, I am assuming they still do it this same way.
lets say a piece of metal fragment gets in there with the coin, and there you go.
What is the orientation of the lettering on this (head up or tails up reading?) and does it wrap from the edge to the rim of the coin also? Does it correspond to what appears in the picture to be an indent on the obverse below the statue of liberty, just past 6 o'clock on the rim?
I was thinking an edge strike through or imperfect planchet. Another golden dollar found in a mint roll
in 2007 as an example.
shows damage - the coin got jammed in a
The Adams dollar looks like a bad rim ding -
it does not look like an edge strike or planchet
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