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 Replies: 26 / Views: 18,402 |
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Bedrock of the Community
United States
20753 Posts |
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Pillar of the Community
United States
2271 Posts |
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Something most people don't seem to realize is that coins come straight from the mint with "stuff" already on them. I think this is exactly what causes the problem. They use different rinses and processes every year and some of the things left on the coins or struck right into them causes various types of oxidation or discoloration. Some of these dates are going to be tough in nice pristine condition and well made. Time don't fly, it bounds and leaps.
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Valued Member
United States
344 Posts |
Nothing you can do about carbon spots unfortunately. Only thing you can do it prevent it from getting worse by keeping out of humidity and in a safe place.
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Pillar of the Community
United States
613 Posts |
Cladking, do you know why the mint does rinses on newly minted coins? Wouldn't they be immediately "clean" upon minting? What needs to be rinsed off?
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Pillar of the Community
United States
2271 Posts |
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Cladking, do you know why the mint does rinses on newly minted coins? Wouldn't they be immediately "clean" upon minting? What needs to be rinsed off? The processes change so frequently it would be hard to keep up. A lot of the problem may be the oils they use to help keep the planchet flowing freely into the high speed dies. Then mint set coins are rinsed in a chemical similar to ethyl methyl ketone whose name escapes me right this moment. They are sometime washed as well and then dried in busted up corncobs. I don't believe circulation issues are intentionally exposed to any chemicals after striking but they were "dirty" when they were struck. Time don't fly, it bounds and leaps.
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Bedrock of the Community
United States
19951 Posts |
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Cladking, do you know why the mint does rinses on newly minted coins? Wouldn't they be immediately "clean" upon minting? What needs to be rinsed off? The Mint keeps this stuff a secret and, AFAIK, they don't always do it. If you watch some of their videos, the coins are coming off the presses (appear to be dry machined) and then directly into giant bags. Since this is a stamping process, I find it hard to imagine they use dry machining since there are HUGE advantages to using a metalworking fluid during the process. I'm guessing they are using an evaporative, solvent-based stamping fluid and you just can't tell. I wish I could get clarification on this! However, I do know they were rinsing the new golden dollars since they had big problems with them browning too quickly. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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New Member
United States
34 Posts |
Same issues here.. just bought a OBW 1955 roll mirror like.. gorgeous inside the wrapper the second I take it out one by one they turn black. So much money wasted.. don't know what to do.. need to send them to get certified.
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Valued Member
United States
225 Posts |
So...let's say the strike on the coin is a 67 and PCGS says the value of the coin in a 67 is $200 - $600. When you look closer...the coin has black water spots on them.
How much would it bring down the value of the coin 100%,75%, 50%...?
Please help me with this because I want to be a accurate as possible in respect of the hobby.
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Bedrock of the Community
United States
19951 Posts |
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How much would it bring down the value of the coin 100%,75%, 50%...? Technically none, slabbed coins are graded and the "price book" value range is what it is. Now, as a collector with a discerning mind, you set that value mentally when you see a coin. Afterall, anything is really only worth what someone else is willing to pay. |
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Pillar of the Community
United States
1913 Posts |
Realistically, the value of a cent with black spots is diminished significantly. Try to sell it and you won't have near as many offers on the spotted coin and/or the offers won't be for near as much. Of course it's hard to say exactly what the difference is. I'd think that the $200 value is for an ugly MS-67 with spots while the $600 value is for one with no spots that is extremely visually appealing. BTW, PCGS's and NGC's values are way high, probably by a factor of two.
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Bedrock of the Community
United States
17884 Posts |
And spots can develop after the coin is slabbed. And if they do, the TPG grading guarantee does not apply. |
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Replies: 26 / Views: 18,402 |
First Page
Posted 06/10/2016 10:03 pm
