PCGS World Trade Center Ground Zero Recovery Coin The 2000 1 oz Australia Nugget Gem Uncirculated Coin. Weeks after the tragic September 11th, 2001 attack on the World Trade Center, workers at ground zero reached the Iron Mountain Vault. Buried beneath hundreds of tons of rubble, this depository (the official COMEX depository) held a vast amount of investment grade precious metals held by fiscal institutions from around the world. Under heavy security, the coins were loaded into Brink Armored vehicles and sent to be cataloged, graded, and encapsulated by PCGS.These slabs have a specially designed commemorative United States Flag insert which serves to easily identify the coins as a genuine artifact of this catastrophic event. The item "2000 Australia 1 oz Gold Nugget Gem Unc PCGS (WTC Ground Zero) SKU #57636" is in sale since Monday, April 8, 2019. This item is in the category "Coins & Paper Money\Bullion\Gold\Coins". The seller is "apmex" and is located in Oklahoma City, Oklahoma. This item can be shipped worldwide.