1997 S UNITED STATES MINT PREMIER SILVER PROOF SET W/COA VELVET CASE & BOX

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  • Item Category: Coins & Currency
  • Source: eBay
  • Sold Date: Apr 08, 2015
  • Channel: Auction House
1997 S UNITED STATES MINT PREMIER SILVER PROOF SET W/COA VELVET CASE & ORIGINAL BOX FROM THE U.S MINT. EACH COIN BEARS THE MINT MARK "S" DESIGNATION OF THE FACILITY (SAN FRANCISCO). THE HALF DOLLAR, QUARTER AND DIME ARE COMPOSED OF COIN SILVER, THE NICKEL OF CUPRO-NICKEL AND THE CENT OF COPPER-PLATED ZINC. U.S PROOF COINS ARE PRODUCED FROM CAREFULLY SELECTED PLANCHETS, OR COIN BLANKS, THAT HAVE BEEN BURNISHED TO A HIGHER LUSTER. THE POLISHED BLANKS, WHICH ARE CAREFULLY HANDLED TO MINIMIZE SCRATHES AND ABRASIONS, ARE STRUCK ON SPECIAL ADAPTED COINING PRESSES. EACH COIN IS STRUCK AT LEAST TWICE TO BRING FORTH THE MOST MINUTE DETAIL WITH REMARKABLE CLARITY. THE SURFACES OF THE COINAGE DIES USED FOR STRIKING PROOF COINS ARE METICULOUSLY PROCESSED TO CREATE A FROSTED APPEARANCE OF THE IMAGE ON THE DIE. THE BACKGROUND SURFACE IS POLISHED AND BUFFED TO A MIRROR-LIKE FINISH. THE DIES ARE ALSO BUFFED DURING THE STRIKING PROCESS. THE FINISHED COIN, WITH ITS FROSTED CAMEO IMAGE ON A MIRROR-LIKE FIELD, IS CAREFULLY INSPECTED-WITH GLOVED HANDS TO PROTECT ITS SURFACE-BEFORE BEING ASSEMBLED INTO SETS. THE PROOF COINS ARE THEN PLACED IN TRANSPARENT PRESENTATION CASES. PROOF COINS, REFERRED TO AS "MASTER COINS" IN THE EARLY DAYS OF THE MINT, WERE ORIGINALLY PRODUCED TO "PROVE THE CORRECTNESS OF THE DIES." THESE FIRST PIECES, STRUCK WITH EXTRA ... read more