Conservation Showcase: Proof 1963 Quarter

Posted on 4/5/2010

A recent example from our conservation laboratory.

BEFORE CONSERVATION
NCS Conservation Showcase NCS Conservation Showcase
click to enlarge click to enlarge
 
AFTER CONSERVATION
NCS Conservation Showcase NCS Conservation Showcase

Proof coins, in at least the last half century, are specially made and sold primarily to collectors. Given that fact, it is sometimes surprising to see the results of how proof coins can look after years of poor storage. This 1963 Proof Quarter is an example of one of the unusual looks proof coins of the 1950s and 1960s can sometimes exhibit. The appearance of blotchy yellow to brown to reddish-brown residue is both unattractive and potentially destructive to the fragile mirrored surfaces they cover. U.S. proof coins aren’t the only victims of this sort of residue either.

Through careful work, the NCS conservators are able to remove the offensive residues to reveal a bright white mirrored surface beneath. This particular sort of residue creates different challenges to the conservators than does other types of residues. Following conservation, this coin was able to grade with NGC.





Return to the Articles List









  • Global Locations
  • Germany
  • Switzerland
  • Singapore
  • China
  • Hong Kong
  • Taiwan
  • South Korea
  • Global locations map
  • Contact Us
  • NCS
    P.O. Box 4750
    Sarasota, FL 34230
  • 1-866-NCS-COIN toll free
    +1 941-360-3996
    +1 941-360-2559 fax
    Service@NCScoin.com
  • Hong Kong
    NGC-NCS-PMG
    Tsim Sha Tsui, Kowloon
    Hong Kong
    +852 2115-3639
    Asia@NCScoin.com
  • Switzerland
    NGC-NCS-PMG
    Zurich, CHE
    +41 43 816 28 16
    Europe@NCScoin.com
  • Germany
    NGC-NCS-PMG
    Munich, Germany
    +49 89 255 47 545
    Europe@NCScoin.com
  • Numismatic Guaranty Corporation
  • Paper Money Guaranty
  • Comics Guaranty, LLC
  • CGC Magazines
  • Collectors' Society
  • Certified Collectibles Group
  • Official Conservation Service of

    ANAPNG

    © 2014 Numismatic Conservation Services, LLC | Legal Notice and Usage Restrictions | 866-NCS-COIN