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Do Rainbow Toned Silver Dimes Just Get A Pass To Mint State?

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Author Replies: 5 / Views: 135Next Topic  
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Brandmeister's Avatar
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 Posted Today  6H 26M ago Show Profile   Check Brandmeister's eBay Listings Bookmark this topic Add Brandmeister to your friends list Get a Link to this Message Number of Subscribers
I know that some folks really go wild for rainbow toning. I keep running across Mercury dimes where I really feel that if the coin weren't toned in neon shades, it would certainly grade as AU or MS cleaned. Do the TPGs—and PCGS in particular—wave through a lot of heavily toned coins as mint state when they should really grade lower?

Examples:

https://www.pcgs.com/cert/34661605
https://www.pcgs.com/cert/81830384
https://www.pcgs.com/cert/45322704
https://www.pcgs.com/cert/82130497
https://www.pcgs.com/cert/43903872


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Errers and Varietys's Avatar
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 Posted Today  6H 8M ago  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Good question, Brandmeister.

Might just be me, but the second Mercury dime looks circulated to me. My only other thought is it was weakly struck.
Errers and Varietys.
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numismatic student's Avatar
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12029 Posts
 Posted Today  3H 11M ago  Show Profile   Bookmark this reply Add numismatic student to your friends list Get a Link to this Reply
1945 Mercury dimes, especially the Philadelphia mint coins are typically weakly struck because the U.S. Mint was operating at maximum wartime capacity under extreme production pressures. The Philadelphia Mint produced over 159 million Mercury dimes in 1945. To keep up with massive demand near the end of World War II, the mint reused dies and hubs far past their optimal lifespan, causing fine details like the central bands on the reverse fasces to soften or flatten out. Wartime production demands created operational bottlenecks in the planchet preparation and annealing processes. If planchets were not properly prepared or slightly underweight, the metal failed to fully flow into the deepest recesses of the coining dies. The rush to churn out hundreds of millions of coins meant less quality control over die spacing and pressure calibration across high-speed presses.

I think that this is why your first two 1945-P examples lack detail and still grade gem. Happened to a lesser degree in SF but still happened. It doesn't have to do with toning, but the special war time circumstances in 1945. Still slightly over graded imho but probably weakly struck uncirculated examples produced by overused dies.
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Edited by numismatic student
Today 2H 55M ago
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ijn1944's Avatar
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 Posted Today  2H 42M ago  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Nice breakdown, numismaticstudent!
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nickelsearcher's Avatar
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 Posted Today  2H 40M ago  Show Profile   Bookmark this reply Add nickelsearcher to your friends list Get a Link to this Reply
Great input by NS - thank you for sharing your scholarship.
Take a look at my other hobby ... http://www.jk-dk.art
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Errers and Varietys's Avatar
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 Posted Today  1H 10M ago  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Great information numismatic student, thanks!
Errers and Varietys.
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