US Mint New in Blue Packaging</br></br>Product Description</br></br>These 1968 Proof Sets Include Five Gem Proof Coins - Penny Through Half. 1968 Proof Sets are the first of the "S" mint proof sets! Each set comes housed in its original mint holder with box. Gem proof condition. Proof coins are coins that are struck just for collectors. The U.S. Mint uses specially prepared planchets (blanks) and dies. The coins are struck twice to give them optimum detail.</br><br/>http://www.amazon.com/gp/product/B014I5QRBI