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coppercoins.com Forum Index arrow Error Coin Questions arrow 1990D

1990D
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fiddle-fart
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PostPosted: Tue Dec 16, 2008 11:03 am Reply with quote

OK
I got kinda excited when I saw this, but I'm sure it's not what I think. so if someone would tell me what it is.









Thanks
Mike

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Dick
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PostPosted: Tue Dec 16, 2008 3:18 pm Reply with quote

Mike, that is what I call "flat-field-doubling. it is not hub-doubling. Notice the same shift id visible on the date, AND the MM? That is a dead give-away got this type, of effect. I don't think it can be called MD, per se, but the effect is the same.
Dick

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fiddle-fart
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PostPosted: Tue Dec 16, 2008 3:33 pm Reply with quote

thanks Dick
but what causes "flat field doubling"

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Dick
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PostPosted: Tue Dec 16, 2008 3:57 pm Reply with quote

Mike, I think MDIA1@aol.com, could answer that, much better than I. I don't remember if it was Mike Diamond, or maybe Ken Potter, but someone mentioned it, and it just "stuck". It is a form of DDD, die deterioration doubling, I think.
Dick

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coppercoins
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PostPosted: Wed Dec 17, 2008 5:32 pm Reply with quote

This isn't flat field doubling, it's die wear. Those sunken in shadows next to digits are always die wear.
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Dick
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PostPosted: Wed Dec 17, 2008 6:09 pm Reply with quote

Chuck, while we are on it, is there such a thing as,"flat-field-doubling", as I have referred to? And if so, what is it exactly, and what causes it? Thanks,
Dick

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fiddle-fart
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PostPosted: Wed Dec 17, 2008 10:06 pm Reply with quote

well does die wear add any value to a coin
does it make a coin a "keeper" for it being different
does I don't know, I don't have a clue Embarassed

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eagames
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PostPosted: Wed Dec 17, 2008 11:53 pm Reply with quote

Die wear.
It's on many coins. I find it like that most often on anything from 82-mid 90s. It might be because the zinc caused that sort of die wear to happen faster.

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Dick
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PostPosted: Thu Dec 18, 2008 12:16 am Reply with quote

Mike, I agree with Ed, and the info given. In answer to your question re imcreased valuw, in a word: no. It is used by the sellers wth few, if any ascruples to cheat the unwary buyer, putting it candidly.
Dick

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