Physical Bitcoins

Some time ago i saw on reddit some offer requiring people to record samples of his voice and were paying with an amazon gift card, i said "why not" and recordered the thousand samples required. After several months silent i got a mail with the gift card code so i entered it in amazon but the most of the thing i wanted don't ships to my country (because amazon is in Mexico already) so after looking for some weeks i found this coins, are one troy of .999 ounce of gold plated copper.