Shimmering Metal - What Causes It? - Coin Community Forum

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Author	Replies: 6 / Views: 1,556
Aussie coppers New Member Australia 42 Posts	Posted 12/19/2020 12:44 am This is one example of a number of different years where the coin has what I call Shimmering Metal. It creates an effect similar to a hand overexposed to water with the letters and limbs having a sort of dragon skin appearance. What causes it? Report this Post to the Staff

Mr T Pillar of the Community Australia 2180 Posts	Posted 12/19/2020 01:07 am Looks like treatment with some sort of chemical to me. Report this Post to the Staff
GrapeCollects Pillar of the Community United States 8938 Posts	Posted 12/19/2020 01:22 am Acid damage Report this Post to the Staff
spru Bedrock of the Community United States 12477 Posts	Posted 12/19/2020 03:32 am Some sort of environmental damage. In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024 Report this Post to the Staff
echidna Pillar of the Community Australia 599 Posts	Posted 12/19/2020 04:30 am Better pics would help. Take it out of the holder for starters. Watch your top knot Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 12/19/2020 04:49 am PMD of some sort. Heat or acid. John1 Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 12/19/2020 05:53 am I won't dismiss the possibility that it could be Struck Through Grease smear (more likely), or rusty dies (less likely), but I am not completely opposed to the above opinions, either. Need to look at this one in hand with a 10x loupe, to form a more exact idea. To my eye acid attack seems less likely, due to the very circular shape of the affected area. Not heat; it would be considerably more darkened than it actually appears to be. Report this Post to the Staff
	Replies: 6 / Views: 1,556

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