1. Your scale isn't accurate enough with just 1 digit after the decimal as it is a rounded digit. 2. Weight and tolerances only apply in general...
Maybe they mean that to include the single strike jiggled coins which they call doubled dies, even though of course it isn't 2 pressings at all....
Human nature makes them both susceptible. Most members on the bullion forum probably do not have balances that can measure to x.xxx grams and...
When I teach a Human Anatomy class, I still occasionally get the question of why the male skeleton has 12 pairs of ribs (24) like the female,...
Here is one of mine. The green shows the D/D and the red shows the small date '0' over the blue large date '0'. [ATTACH] Jim
Mint weight and tolerances are for uncirculated coins as they were designated by the mint to check on their production and metal use for...
Even though wartime nickels had a different composition, they weighed in the same range. There are no RPMs after 1989 as they started engraving...
All is OK so far, but since the theory involves a current religious group and we can't have political discussion , keep it on the coins of the...
With almost 97% of coins people ask about are either machine or deterioration doubling, it will be one of the largest groups~ Welcome, Jim
Last I heard , PCGS, about 10 + years ago acquired most of the algorithms and "facial " recognition pattern analysis related to 'objects' . Those...
79 dime and 2015 quarter are damaged . The 1999's 'P' is damaged by the same blow to it that damaged the last 9 in the date. IMO, Jim
Calibration requires a weight piece within the scale parameter. With electronic scales, they have a procedure to follow with a precise weight....
One process to take the first steps on learning to grade is to learn the succession of changes that occurs with normal wear and/or handling in the...
I can't judge the monetary value, but the last photos do show a much higher resolution and oddly a better depth of focus on the coin areas, so...
Your cent shows die deterioration doubling, which is not considered an error or true doubling as the die starts out normal , but as it is...
I think your premise is flawed with your "weeding out " process. Several of the ones you likely consider as such are very informed. So far, it is...
What most ignore is that most likely you are putting a corrosion magnet close to a coin. The one below I bought raw in a paper 2x2 and had it in...
I do not think anyone has found any such here recently or we would have all heard about it. Without the wink , I would have considered it an offer...
Since the original 1943 cents were punched from zinc coated steel material, their edges show steel which is a dull grey material. If the edge is...
and perhaps in other forums, they will show up and post "CT banned me and I didn't do anything!!!!!". But they will still be banned from the...
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