The Australian Coin Forum

Full Version: Need opinion on the following 2013 5 cent piece
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Found this in change and was wondering what the brown stain is.  At first glance it appears to be the top coat has been removed.

[attachment=3951][attachment=3950]
Could be anything, coke, coffee. Coin is 7 yrs old so anything's possible. Will probably come off in an acetone bath.