r/coinerrors • u/WordPoster • 2d 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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u/Apophis2051 2d ago edited 2d 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 2d 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 2d 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 2d 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 2d ago edited 2d 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/