Do PCGS Slabbed Coins Often Degrade/Deteriorate Over Time?

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Author	Replies: 8 / Views: 2,942
njnumis Valued Member United States 70 Posts	Posted 06/06/2014 5:37 pm I recently won this coin on ebay and it has rust/toning/idk what on it. It's a 1987 PR69, so I'm assuming this occurred after the coin was slabbed. Is this coin no longer a PR69? I'm thinking it's seriously dropped in value now and I should return it. Do these slabs often let the coins rust like this? Notice the large rust spot between the L and I in "LIBERTY" and another one under "TRUST". These are big brown rust spots, you can't see them well in the picture but they are ugly on the coin. Report this Post to the Staff

kanga Pillar of the Community United States 5825 Posts	Posted 06/06/2014 5:48 pm Generally the problem exists BEFORE the coin is slabbed. It just hadn't shown up yet. So the problem shows up AFTER the coin has been slabbed BUT was started BEFORE the coin was graded. Report this Post to the Staff
westernsky Pillar of the Community United States 7618 Posts	Posted 06/06/2014 5:49 pm If you can return it and get your money back then get it done ASAP. Yes, coins can degrade in slabs. If there was an old cleaning/dip the grading service might not have picked it up when it was originally submitted. If the coin was improperly rinsed then residue might show up as a toning spot after a few months or years. I think this is what you are seeing on this particular coin. Report this Post to the Staff
jbuck Moderator United States 188213 Posts	Posted 06/06/2014 5:55 pm Yes, they can. The slab holders are not air tight, so it depends on how it was stored. Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
njnumis Valued Member United States 70 Posts	Posted 06/06/2014 6:07 pm Thanks for the heads up! The seller offered return/exchange so I'm covered. But thanks for the info, good to know I have to be careful with these slabs! Report this Post to the Staff
BadThad Bedrock of the Community United States 19944 Posts	Posted 06/06/2014 8:34 pm Exactly why you should rinse any coins with acetone right before you mail them to a TPG. Also, people often store slabs improperly which can cause issues. Slabs should be stored the same as you would a coin in a 2x2. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
solotime Pillar of the Community United States 2311 Posts	Posted 06/06/2014 10:17 pm You shouldn't buy PR-69 coins because any proof coin is like always PR-69. You're just paying more for the slab. Report this Post to the Staff
perfessor Pillar of the Community United States 927 Posts	Posted 06/06/2014 10:27 pm There is no way this would grade proof 69 under any circumstances. Something had to have happened after it was slabbed. That is a shame. Report this Post to the Staff
chasingtailbar Pillar of the Community 968 Posts	Posted 06/08/2014 11:13 am That coin was improperly dipped prior to slabbing. Takes time for the bad rinse to show. Report this Post to the Staff
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