Weird Blue Toning On Canadian Cent - Coin Community Forum

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Author	Replies: 4 / Views: 1,731
malissadawn Pillar of the Community Canada 1931 Posts	Posted 10/08/2008 4:01 pm I have not seen this type of toning before and can't even be sure it is toning to be honest. This coloring shows up as blue when you tip and move the coin but it didn't photograph as well as I hoped. I do not believe this is any type of damage as it is not scratched or anything like that in those areas, yet the coin is well circulated so I assumed it is toning. any thoughts? Report this Post to the Staff

sillyxxx Valued Member Canada 50 Posts	Posted 10/08/2008 4:12 pm Corrosion? Report this Post to the Staff
malissadawn Pillar of the Community Canada 1931 Posts	Posted 10/08/2008 4:20 pm wouldn't there be actual corrosion marks? It is a very smooth surface under the blue area. Also, why only around the edge of the cent instead of uniformly over the whole coin? Edited by malissadawn 10/08/2008 4:21 pm Report this Post to the Staff
KurtS Pillar of the Community United States 5318 Posts	Posted 10/08/2008 5:26 pm Hi, I think I've seen Canadian cents with a blue cast. The coin may have been exposed to something, or could be simply explained by the thickness of the patina. Natural colored toning is patina on a coin that's thin enough to cause color interference, similar to how a thin layer of oil on water appears to be colored. Over time, as the patina grows thicker it will become a uniform brown color. Report this Post to the Staff
bmanofnbc Pillar of the Community United States 1424 Posts	Posted 10/08/2008 5:28 pm my guess is that it was left outside in the elements then returned to ciculation and the "corrosion" was worn back off from being handled. The only areas where the "corrosion" is still there is in the protected areas near the rim and other high points in the design. Report this Post to the Staff
	Replies: 4 / Views: 1,731

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