Even if a coin remains sealed from the mint, toning can occur. Coins can tone beautifully, or become ugly. Another disturbing feature of coins is some can develop spots, often white in color, even though the coin is permanently sealed by a mint.
In silver coins, always look for black carbon spots, black circles around the rim, and white spots. Unfortunately, these do not show up well in photographs. So asking for a second picture is of little value. Read the auction, and read the feedback. Undisclosed flaws should be noted in the feedback comments. And do not just look at the negative and neutral feedbacks. Some buyers do not leave negative feedback, but make comments in the positive feedback that warns other buyers.
This article is being made available from Black Spaniel Gallery at http://blackspanielgallery.comby the author. Links to major English speaking mints are available at Black Spaniel Gallery.
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