I bought this 1921 British Half Crown at the LCS recently, but it's got this weird white powder on one side. Anyone know what this is? What should I do about it? Acetone dip maybe?
Here's the back side.
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From @methus
I bought this 1921 British Half Crown at the LCS recently, but it's got this weird white powder on one side. Anyone know what this is? What should I do about it? Acetone dip maybe?
Here's the back side.