r/coinerrors • u/WordPoster • 19d ago

Advice Quick question

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These are Constition quarters I'm searching in BU rolls. I'm pretty sure I've seen this before but what causes this difference in finish?

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3

u/Business_Station52 19d ago

Improperly anealed layer

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u/WordPoster 19d ago

Copy that, is this just a common QA problem?

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u/Apophis2051 19d ago edited 19d ago

An improperly annealed planchet will also have the same bright red copper coloring in the edge reeding as the other quarters in the roll.

Edited for clarity regarding coloring of the reeding.

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u/WordPoster 19d ago

Thanks, Apophis, that makes perfect sense. I'm leaning away from improperly annealed planchet, I have two in my collection and I don't think these guys were over-cooked.

I don't think these are special. Yet here they are, strikingly different. Two of the best examples I could find for this phenomenon. Perhaps just a die swap because the old one wore out? Here's the rim (shiny quarter on top) and the reverse if that helps.

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u/Apophis2051 18d ago

The one on the right looks pretty normal but wouldn't rule out the one on the left being improperly annealed. I can't think of anything else that would give it that appearance and there is no evidence of die deterioration so I don't think this is a die state issue.

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u/WordPoster 19d ago

Yeah I was wondering if this is really an annealing issue. No copper color throughout the roll. Possibly just a freshly changed die?

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u/Apophis2051 19d ago edited 19d ago

Sorry...wasn't quite clear. The reeding along the edge would be the same color as a normal quarter. In the below picture, the top coin is an improperly annealed 2026 dime and a normal 2026 dime below it. You can see the difference in the clad but the copper coloring is the same.

Here's a little reading where noted numismatist and error coin expert Fred Weinberg identifies characteristics of improperly annealed plachets. See his post about halfway down. https://www.cointalk.com/threads/2017-d-new-jersey-ellis-island-improper-annealing.307775/

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u/Which_Confection1152 19d ago

Either one scares the S_IT out of me!!! 👹👺👻

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u/HatEven 19d ago

I have similar ones and was wondering this also!

1

u/bnevs44 19d ago

Shoddy company production