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#1
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Us Mint Weight Tolerance
From what I remember the US mint had some pretty low weight tolerances for
their coins. I have ome acroos a 1952 quarter that weighs 6.37 grams which is .12 grams or almost 2% over weight. Can I nsell this as a rare error for lots of $$ on ebay? Jorg Lueke ANA 197036, ANS 11206, CSNS, ACCG, TCACC , CWTS http://www.ancientcoinvalues.com/ |
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#2
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According to the "Specifications of U.S. Coins" chart (which I revised) in the
"Coin World Almanac" (which I helped write), the official weight tolerance for U.S. silver quarters from 1947 to 1964 was 3.0 grains avoidupois, or approx. 0.194 grams. It had been 1.5 grains from 1873 to 1947 and 1.0 grains before 1873, but they were getting sloppy. Tom DeLorey .. Subject: Us Mint Weight Tolerance From: Jorg Lueke Date: 11/10/2004 11:07 PM Central Standard Time Message-id: From what I remember the US mint had some pretty low weight tolerances for their coins. I have ome acroos a 1952 quarter that weighs 6.37 grams which is .12 grams or almost 2% over weight. Can I nsell this as a rare error for lots of $$ on ebay? Jorg Lueke ANA 197036, ANS 11206, CSNS, ACCG, TCACC , CWTS http://www.ancientcoinvalues.com/ TomDeLorey - "MADNESS!!! MADNESS!!!" Final scene from "Bridge Over The River Kwai." |
#3
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Thanks Tom. That is rather sloppy all things considered. You wouldn't
happen to know what the value for a good assay was? How close to 90% silver did the mint need to get? On 11 Nov 2004 05:32:46 GMT, TomDeLorey wrote: According to the "Specifications of U.S. Coins" chart (which I revised) in the "Coin World Almanac" (which I helped write), the official weight tolerance for U.S. silver quarters from 1947 to 1964 was 3.0 grains avoidupois, or approx. 0.194 grams. It had been 1.5 grains from 1873 to 1947 and 1.0 grains before 1873, but they were getting sloppy. Tom DeLorey . Subject: Us Mint Weight Tolerance From: Jorg Lueke Date: 11/10/2004 11:07 PM Central Standard Time Message-id: From what I remember the US mint had some pretty low weight tolerances for their coins. I have ome acroos a 1952 quarter that weighs 6.37 grams which is .12 grams or almost 2% over weight. Can I nsell this as a rare error for lots of $$ on ebay? Jorg Lueke ANA 197036, ANS 11206, CSNS, ACCG, TCACC , CWTS http://www.ancientcoinvalues.com/ TomDeLorey - "MADNESS!!! MADNESS!!!" Final scene from "Bridge Over The River Kwai." -- Jorg Lueke ANA 197036, ANS 11206, CSNS, ACCG, TCACC (I try), CWTS http://www.ancientcoinvalues.com/ |
#4
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Subject: Us Mint Weight Tolerance
From: Jorg Lueke Date: 11/11/2004 6:45 AM Central Standard Time Message-id: Thanks Tom. That is rather sloppy all things considered. You wouldn't happen to know what the value for a good assay was? How close to 90% silver did the mint need to get? Don't know the fineness tolerance that late, but suspect it was pretty tight. I remember reading about a batch of Carson City silver dollars that was condemned and remelted because they assayed out at only .899 fine. TomDeLorey - "MADNESS!!! MADNESS!!!" Final scene from "Bridge Over The River Kwai." |
#5
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On 12 Nov 2004 05:55:20 GMT, TomDeLorey wrote:
Subject: Us Mint Weight Tolerance From: Jorg Lueke Date: 11/11/2004 6:45 AM Central Standard Time Message-id: Thanks Tom. That is rather sloppy all things considered. You wouldn't happen to know what the value for a good assay was? How close to 90% silver did the mint need to get? Don't know the fineness tolerance that late, but suspect it was pretty tight. I remember reading about a batch of Carson City silver dollars that was condemned and remelted because they assayed out at only .899 fine. TomDeLorey - Interesting that they took such pains with the alloy but let the weight drift. I suppose it must have been easier to control the fineness and this also let them have more wiggly room with the weight. Although for a quarter .001 difference would have been the same as a .006 gram differnce which they obviously weren't very concerned about. |
#6
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Interesting that they took such pains with the alloy but let the weight
drift. I suppose it must have been easier to control the fineness and this also let them have more wiggly room with the weight. Although for a quarter .001 difference would have been the same as a .006 gram differnce which they obviously weren't very concerned about. I think they were just trying to allow for the fact that the occasional coins did come light or heavy, but they were very strict on bulk tolerances. They weighed finished bags, allowing for the weight of the bag, of course, and if the entire bag consisted of all light or all heavy coins (if, for example, a strip had been rolled wrong) they melted it down and started over. Over the long run, people got fair weight coins. .. TomDeLorey - "MADNESS!!! MADNESS!!!" Final scene from "Bridge Over The River Kwai." |
#7
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On 13 Nov 2004 14:46:24 GMT, TomDeLorey wrote:
Interesting that they took such pains with the alloy but let the weight drift. I suppose it must have been easier to control the fineness and this also let them have more wiggly room with the weight. Although for a quarter .001 difference would have been the same as a .006 gram differnce which they obviously weren't very concerned about. I think they were just trying to allow for the fact that the occasional coins did come light or heavy, but they were very strict on bulk tolerances. They weighed finished bags, allowing for the weight of the bag, of course, and if the entire bag consisted of all light or all heavy coins (if, for example, a strip had been rolled wrong) they melted it down and started over. Over the long run, people got fair weight coins. . TomDeLorey That does make a lot of sense. As long as the weight variance for an individual coin is low enough that people don't start weighing and remelting the coins the individual weight would not be too critical. |
#8
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From: Jorg Lueke
I have ome acroos a 1952 quarter that weighs 6.37 grams which is .12 grams or almost 2% over weight. scrape off the chewing gum -heh- JOKE 8-| - Coin Saver |
#9
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With silver @ 7.50 per OZ. Sweet, as Cartman would say.
Regards, Dan |
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