How much is an 1969-1989 first men on the moon silver 5 dollar piece coin from the marshall islands worth?

"Currently Marshall Islands coins are valued at or below their face value when bought and sold in the US coin market. The basis for their currency is the US dollar. This was only based on the US dollar and is not redeemable in the US. The coins are rarely redeemable at face value even on the islands. These coins were intended for collectors, not for widespread use as currency."

Source: http://coins.ha.com/common/questions.php

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