2007 Gold Proof Coin 3.1 Grams. 585 Gold 14k Boston Tea Party AMERICAN MINT. The paper work on them has the wrong weight.Each one weighs 3.1 grams and is real 14k Gold. Check out my other listings. This item is in the category "Coins & Paper Money\Coins: US\Commemorative\Modern Gold (1984-Now)". The seller is "couchcollectibles" and is located in this country: US. This item can be shipped to United States.