It is in a $2.50 GOLD holder, but is NOT gold. Just put in this holder because it fit nicely and preserves it's condition.  Very rare error! Second to last pic shows what it should look like. Last pic shows description of what it's supposed to be made of.

The product is a rare 5 Centavos coin from the Philippines, specifically from the historical period of U.S. occupation (1898-1946). This particular coin features an error of being struck on a 1967 10 centavos planchet. Despite being circulated, the coin is described as being uncirculated, making it a valuable collector's item for those interested in world coins, especially those from Asia and the Philippines.