2006 Silver Proof Set U. Mint Original Government Packaging OGP COA. This official 2006 U. Mint 10 coin Silver Proof Set contains a Sacagawea dollar, Kennedy half dollar, Roosevelt dime, Jefferson nickel and Lincoln cent, along with all five Statehood quarters. All coins bear the San Francisco “S” mint mark, and feature extra sharp images and mirror-like surfaces. The half dollar, quarters and dime are all 90% silver. Comes with the original U. Mint packaging, including a certificate of authenticity. These sets were made in 2006 and are not brand new. The packaging may show signs of wear such as minor folds and scrapes. The images used for this listing are stock photos from our inventory. Mint Silver Proof Set.