How much is a 1942 Eyrir Konumgan Islands worth?

So many Mercury dimes were made from 1940 to 1945 regardless of date or any mintmarks that most are only valued for the silver, about $2.00

More information is needed. Please check your coin again and post a new, separate question with its denomination and the name of the country that issued it.

4-4-11>> A 1942 Washington quarter is common, most circulated coins are valued for the silver about $7.00

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Average value is 3 to 10 cents.