PMD, plated post mint.
Impregnated impurities pressed into the metal during the planchet sheet rolling process. It's been discussed many times here on CT.
It's just an older A&D, similar to this one. http://balance.balances.com/scales/42 The 0.00001 g resolution balances are standard fare in any...
Mine is 0.00000 g.
The transition from copper to copper plated zinc, the change occurred in1982. Also in the 70's the Mint was seeking a solution to incomplete steps...
Congrats!
I can imagine your pain! I was on top of these in 2009 and acquired a TON of minty, fresh rolls to search, I spent mega time looking through them...
What is the intended purpose?
The spotting was so bad in 2009, they ignored hits and graded mostly on lack of spots. Pretty much all 2009 coins have 67 luster.
Here's what an ANACS MS-67 looks like: [ATTACH] [ATTACH] [ATTACH] [ATTACH]
I complained about the spots since May of 2009: [ATTACH]
[ATTACH]
The whole 2009 series is plagued with spots. My observation is the grading services basically graded them on the number of spots more than any...
CONGRATS! It must have some good luster, beautiful coin.
I would have guessed 66. What held it back?
Man...that 12D! NICE!
64RD
Not an error, just a stain.
Someone either plated it or removed the copper plating. It's what we call PMD, Post Mint Damage.
No mental calibration required when you see a picture like this: [ATTACH]
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