By Joshua McMorrow-Hernandez for PCGS …… Occasionally a coin will come into the PCGS Grading Room that simply isn’t eligible for grading. A No-Grade coin might be one that is artificially toned, abrasively cleaned, has very large scratches, has been altered, or has been repaired. Some coins that are extremely rare or are well known […]
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By Joshua McMorrow-Hernandez for CoinWeek.com …… For as long as there have been proof coins, there have been collectors trying to preserve them. Proof coins, which are often struck more than once (at least twice) on polished planchets by specially prepared dies, are specifically designed to be appreciated and are not intended for use in […]
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By Blanchard and Company, Inc ….. Recently the World Gold Council released a report on the relationship between gold and the natural environment. As the threat of ecological impact and global warming loom large, gold mining operations are seeking more efficient methods of sourcing gold. One company, Goldencorp, is at the leading edge of this […]
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By Joshua McMorrow-Hernandez for CoinWeek.com …… For as long as there have been proof coins, there have been collectors trying to preserve them. Proof coins, which are often struck more than once (at least twice) on polished planchets by specially prepared dies, are specifically designed to be appreciated and are not intended for use in […]
The post Evaluating Safe Preservation Methods for Proof Coins appeared first on CoinWeek.