Check the listing for details. 1996-S U.S. MINT PROOF SET CLAD OGP COA. Made in United States. Listed at 8.99 USD. The 1996-S U.S. Mint Proof Set Clad OGP COA is a valuable collection of uncirculated coins minted in San Francisco in 1996. This set includes coins struck with a proof finish and comes with a Certificate of Authenticity from the U.S. Mint. Perfect for collectors looking to add a piece of American coinage history to their collection, this set offers a pristine and limited edition selection of coins.