4.12 gr 0.5833 gold 0.0773 oz of pure gold. Authenticity of this coin is Guaranteed by NGC. The item "Cook Islands 1997 Gold $50 NGC PF69UC Leif Ericson" is in sale since Sunday, November 17, 2019.This item is in the category "Coins & Paper Money\Coins\ World\Gold". The seller is "logicpapa" and is located in San Francisco, California. This item can be shipped worldwide.