Pierce Proof Dollar with Rings, Lathe Lines?

I was recently at a coin show and picked up a 2009 presidential dollar proof set so I could obtain this particular coin. It has many rings that look similar to lathe lines, but I've never seen them on a proof. Are these acutally lathe lines and have there been any others found? Also, do you think there would be any added value? ---Happy New Year.

 

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I have several presidential coins but have never seen this, I,am not sure if they are lathe
Lines are not but it,s a really cool coin

 

I'd say roll marks, but that's essentially impossible because it is in a proof set...

 

IDK, but its definately a keeper...

 

Could it be die polish marks like you see on some coins?

 

If the marks happened after they were minted, then they can't be lathe cutting marks as the face of Mr. Pierce would no longer exist. Surely the US mint would not have cut the die/punch with a lathe and not ground and polished it afterward........... Maybe it is wrinkle marks? Is the thickness in the blank fields the same as another dollar?

 

Doesn't look like post mint damage to me. My guess is it was struck through grease.
Only other thing I could think of would be improper polishing of the die face, but my bets on grease.

 

I would agree with this suggestion, or otherwise stated improper die polishing .

 

Someone else posted a proof set and it looked like the coin had lathe lines. A prez dollar. Cannot remember which post.

 

I've seen several reports of these things and about the only thing I think they could be would be lathe lines from a poorly turned die blank.

 

I didn't think this would be important, but here is a Fillmore dollar from the same set. Although not as dramatic, there are still these "lines" throughout the obverse, most prominant on the outer edges. Instead of being more like defined lines like on the Pierce dollar, they are more smoothed out and harder to see. I would say they are on the Buchanan dollar as well, but are even more smoothed out than the Fillmore dollar. It would be hard to capture it with my camera. Any way I don't know if this will support the lathe lines theory or strike through theory but here is the pic.
Try to ignore the bubbles. They're on every one of the coins and they're ugly.

 

It seem as if this is a mint production problem. Fortunately I chose not to collect these . I don't think you would find this lack of quality control either at the Canadian Mint or UK mint.

 

I have the same effect on a 2010 Buchanan $1 obverse. How would you guess a TPG would treat this coin? It is still sealed in the proof packaging, so it is in this condition from the mint. It is obviously a defective coin of some sort. Would this be worth more or less than a normal pres $1?

Lack

 

Since it is Mint Production Damage , technically it could be called a Mint Production Error since it has escaped quality control and is in circulating Mint Sets . Whether or not the TPG's will recognize it as an error is another issue . Probably not.

 

It does look like lathe lines to me, but I could be wrong. That's just terrible that the mint would let that happen on a proof coin. SMH

 

When I asked the same question, I was told it was on the packaging, not the coin.
See http://www.cointalk.com/t123973/

 

Poppa,

When you magnify them you should be able to tell if they are on the coin. Mine had small scratches and a spot or two but I could tell they were the coin not packaging.

 

Late to the party, but at first guess these are creating possibly not by the mint but the coiled roll supplier. Issues with either the cladding, or the annealing of the metal causing the upper layer to contract leaving ripples.

Should also add, without know the exact process on how they suface the gaint clad sheets the tool used could have been running at to high a feed rate or to low an RPM or both. Could also be where the tool either started on the sheet or lifted off leaving machining marks.
The dude's at the Mint can care hoody who on what it looks like when they feed it into the punch!
In the machining world we call this "MADE ON A FRIDAY AFTERNOON".

 

I first thought they were on the coin but after seeing some images of the packaging for some of these without the coin I'm no longer sure. (frustratingly they either show the coin in the packaging, or they show the packaging, but they don't show pictures of the coin after it is removed from the packaging.)

 

Judging from similar specimens I've seen, the lines are in the plastic, not on the coin.