and add humidity, keep your coins cool and DRY! hence all the silica gel comments, just remember to check and recharge the silica gel often.
I'd keep them in a box lined with Intercept Shield as well. I've had copper coins turn from Red to full Brown after moving from Denver to Houston. After 5 years in Houston temperatures and humidity several turned, one was PCGS, two NGC and several old small ANACS slabs, interestingly my 2x2 Capitol Plastics housed coins stayed quite the same through that time, they were in an Intercept Shield 2x2 box.
Having just read the NGC guarntee I would take heed of condor101's advice on a re-certification. After reading it, I'm really NOT an NGC fan.
Here is PCGS's copied from their website:
Quote:
Coins that are environmentally damaged. The PCGS holder, while excellent for long term storage and protection, does not protect coins from harsh environmental conditions. Consequently, the PCGS Guarantee does not apply to coins which have been environmentally damaged. For example, if your coins are damaged in a flood or fire, the PCGS Guarantee would not apply to those coins. This also applies to copper coins stored in environmentally risky locations (high humidity, see next paragraph.)
IMPORTANT: Because the color and surfaces of copper coins can change due to environmental factors, PCGS does not guarantee the color of copper coins, or the absence of copper spotting, for any PCGS graded copper coin graded or sold after January 1, 2010.
NGC's relevant information pursuant to color of encapsalated coins:
Quote:
The NGC Coin Grading Guarantee does not apply to copper, bronze or copper-nickel coins graded by NGC prior to April 1, 2000.
To the extent that the NGC Coin Grading Guarantee applies to copper, bronze or copper-nickel coins, such Guarantee expires on the 10-year anniversary of their date of encapsulation by NGC.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440
Posted 02/18/2013 05:45 am
