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bonkrood
Posts: 796 ✭✭✭
This happens every once in a while doesnt it. DATE
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Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
How often would you conjecture the grade, rather than the date, is incorrect?
Rob
http://www.vamworld.com
and
http://www.rjrc.com
I would think a LOT more grading errors, than date errors.
<< <i>How often would you conjecture the grade, rather than the date, is incorrect? >>
If you mean the grade is wrong due to a mechanical error such as happened with the date on the pictured slabs, then I would expect a similar error rate. If .5% of the slabs have a mechanical error on the date, then I would expect .5% would have a mechanical error on the grade. I believe the error rate just due to getting the grade wrong is probably higher than the mechanical error rate.
<< <i>Any process with people with have some error percentage no matter how careful and perfect they are.
How often would you conjecture the grade, rather than the date, is incorrect?
Rob >>
That depends on the means of data entry. Given the simple case of a 4-digit coin number and a 2-digit grade, a trained chicken, pecking 1 wrong key out of 6, would screw up the grade 1/3 of the time. Of course, I've seen a picture of a PCGS slab with PCGS misspelled, so the data entry might not be that efficient.
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution