The piece contains one ounce of. 999 silver and was one of five coins in the Mint's 2011 American Eagle 25th Anniversary Silver Coin Set.This listing is for the 2011-P reverse proof coin only. Your coin is housed in NGC's EdgeView® holder bearing the special EAGLE 25. You'll receive the exact coin in the obverse/reverse scans. We occasionally extend Second Chance Offers. The item "2011-P REVERSE PROOF SILVER EAGLE $1 NGC PF 70 ER FROM 25TH ANNIVERSARY SET" is in sale since Monday, February 15, 2016. This item is in the category "Coins & Paper Money\Bullion\Silver\Coins". The seller is "bluemoves" and is located in Massachusetts. This item can be shipped to United States, to Canada.