2012 United States Mint Silver Proof Set, 14 coins total, all original mint packaging and COA (certificate of authenticity). 2012 S US Mint Silver Proof 14 Coin Set. In this set the Quarters, Half Dollar and dime are all 90% silver. Produced by the San Francisco Mint this set includes one of each coins made for circulation in 2012.The Lincoln penny, Jefferson, nickel, Roosevelt dime, Kennedy half and Sacagawea dollar. In addition to all of the it contains the four presidential dollars introduced in 2012, Arthur, Cleveland, Harrison and Cleveland (22nd & 24th president). Get images that make Supersized seem small. Tailor your auctions with Auctiva's. The item "2012 S US Mint Silver Proof 14 Coin Set" is in sale since Tuesday, September 4, 2018. This item is in the category "Coins & Paper Money\Coins\ US\Proof Sets". The seller is "wholesalecoinandmore" and is located in Dubuque, Iowa. This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia.