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 Replies: 7 / Views: 1,567 |
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Valued Member
United States
259 Posts |
A question was posed earlier about the use of technology for grading (of lack thereof) by the TPCs. It made me wonder if it may be possible to use the weight of a coin to do rough grading of non MS coins. Since a certain amount of wear typically correlates to a grade, it should also correlate to a weight range. Of course this would not work within a grade; e.g. The differences between VF 25, 30, and 35 relate mainly to surface condition and not to wear.
Has this been studied?
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Pillar of the Community
Canada
5417 Posts |
I believe that this questions has been raised before. To put it simply, for a lot of very obvious reasons, grading by weight is not realistic. Former topic: https://goccf.com/t/182193Edited by zxcccxz
02/17/2015 12:02 am
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Bedrock of the Community
Australia
21786 Posts |
Impossible to work with higher grades, where most of the value increase between grades happens to be.
There would be nil variation in weight with MS grades.
MS grades imply nil wear, and therefore no weight loss between any of the grades.
wt.MS60 = wt.MS65.
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Moderator
 Australia
16826 Posts |
As others above and in the old thread stated, it's impractical. The difference in weight between two uncirculated coins at extreme opposite ends of the tolerance is greater than the difference in weight caused by one or two differences in circulated grade. In other words, an EF coin that originally started out with an almost-too-heavy planchet will weigh the same as or even more than an uncirculated coin of the same type which started out with an almost-too-light planchet.
All of which assumes, of course, that every coin falling outside of legal tolerances is actually detected and destroyed; as any collector of errors will tell you, this is not the case. "Bitten rim", "thin planchet" and other error coins would all come up with false positive "wear".
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
United States
1215 Posts |
Wow.... funny how someone asked this question.
I remember it being my second post.
I learned that the mint has tolerances, so doing so would be impractical.
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Pillar of the Community
 Canada
5588 Posts |
It's not only the tolerance weights of the planchets, but the amount of dirt/gunk on the midgrades.
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Valued Member
 United States
259 Posts |
Sounded like a good idea in my mind! I should point out my original post said non MS grades.
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Pillar of the Community
Canada
5394 Posts |
eventually we will all probably be able to grade by our own abilities and eliminate the need for grading services altogether!  ! |
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Replies: 7 / Views: 1,567 |
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Posted 02/17/2015 01:21 am
