Conservation Showcase: Sarawak 1911 H 10 Cent

Posted on 3/8/2010

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

World coins can be just as at risk for the development of dangerous residues as U.S. coins can be. Improper storage can lead to the development of hideous residues that, with time, can lead to irreversible damage. Long-term storage in holders containing the plasticizer PVC is one of those improper storage techniques that that can cause nasty residues that numismatists turn to NCS to remove.

This 1911 H, for Heaton Mint in England, 10 Cent coin from Sarawak was submitted to have the detrimental PVC residue removed from its surface so that this coin would both be stable in long-term storage and gradeable by a third-party grading service. The residue was able to be removed while leaving the pleasant toning on the piece. This coin was able to grade with NGC numerically after the conservation.



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