When it comes to error coins you would need to send it to NGC or PCGS for grading. Then I would either post it on eBay or send it to Heritage auctions to sell it. Error coins are a very niche market. You need to get it in front of a national audience
If it is an error coin it would need to be graded by PCGS or NGC before it would have any additonal value. Error coins do not have any value unless they are graded. As far as value I am not sure. I was not able to find another coin with that particular error. Your best bet is to get it graded and sell it through Heritage auctions or on eBay. Error coins are a very niche market and it is best to get it in front of a national audience.
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