Keiferscoins & Conder101-case of the yellow insert rings continues

Dog97

Here's another one, early state. It wasn't like this when I got it in 98. Mostly been stored in an Eagle brand album. MS 69 PCGS Type 5.

bumpy

I have a bunch of 2000's in ICG holders that look just like that. MS69

VonZipper

Hey dog was that spotting on the before?

Conder101

Looks like PCGS must have gotten in a bad batch of insert rings sometime between Jan 97 and Nov 98. Unlike the earlier example, this one seems to have actually damaged the coin in the holder. This raises worries about other coins slabbed during that period. I don't remember what the other yellow ringed coin was (I have the scan saved on another machine.) so I don't know if the risk is for all coins or just the silver eagles. We need to turn up more specimens.

MadMonk

Can "Metal safe" VCI cause plastic to yellow. Have something in the back of my brain to that effect.

boz

Conder,
Received your book this morning. Thumbed through it, very nice. Can't wait to get into it more tonight at work. Working the graveyard shift tonight so I will have some time to look closely. Is the damage to that coin from the holder, or just crappy mint proceedure? Have some like that, and they have been in a controled environment, without any yellow rings in the holder. Same time frame.

kieferscoins

Here was the thread to David Hall on the subject: Q&A



Cameron Kiefer

EVillageProwler

I had a slab from that same time period whose ring also turned yellow all of a sudden. Charlie took care of it, and had PCGS neutralize the coin just in case.

EVP

kieferscoins

You should have kept it. That now brings the number to 3-4 so far of confirmed yellow ring inserts.

Cameron Kiefer

Conder101

Well it wasn't just an isolated bad batch of rings. Dogs example dates from 97 - 98 and Camerons is from before 1995. So now we have rings from different time periods changing and D Hall doesn't know why they did it. Not good. So it now sounds like the slabs must have been exposed to some form of "environment" that caused the change. It must be fairly unusual or there would be a lot more of them out there and they would probably have been noticed before now. I wonder if these coins could have been irradiated during the anthrax scare? I wuld have expected more serious damage to the holder in that case though.

garbageman

IMHO, this is the fault of the polymer, and likely caused by exposure to light (esp. sunlight....) or just aging plastic.

Rings would work fine if the polymer was stable.

Conder101

Yes it is probably exposure to something but what and why so few of them around? PCGS has been using these rings since at least 1990 and so far we have had fewer than six reported and they have been from two different varieties and slabbed more than two years apart.

BigE

I don't think the rings damaged the coins, give PCGS a break, I kind of like the colored ring effect and suggest a bright blue for silver and an irridescent red for copper--------------BigE

Dog97

Sorry I don't have more facts but this is what I know for sure:
The ASE has been in my house since 1998.
House is central HVAC climate.
Stored in safe in Eagle type album with others both Proof & BU in Danscos and snaplock cases.
Yellow is very slight.
Coin has turned bad only in the last year or so.
Maybe:
When it's as old as kieferscoins' it will be as yellow.
The different silver content reacts faster with ASEs.
It was dipped or otherwise contaminated prior to slabbing.

oreville

Dog97: It must be all about the filters in your house?

halfnut

I have a 2001 Sac that the ring is yellow so add it to your list. It was clear when I got it but it turned in a short time to a nice yellow, hummm new collecting area toned slabs. If anyone wants a scan I can try when I get home on friday. Just P.M me.

Conder101

Ok so here is a report of a yellowed ring on yet a third variety of slab produced over two years away from the previous one. And this makes at least the second one that has turned while it was owned by one person. That would seem to exclude exposure to so kind of extreme condition such as irradiation or the ring coming from a bad batch. From the description of how dog's was stored it sounds like it was stored properly so that seems to leave a reaction between the ring and some kind of contaminant on the coin at the time of slabbing. (Silver content doen't seem to be a factor since the most recent report is from a coin with no silver in it. Unless the reaction is dependant on the COPPER content and not the silver.) My bet is a reaction to some unusual chemical that the coin has been dipped in and then not properly rinsed. Probabvly not a standard coin dip since if that was true there would be a LOT more of these out there since we know there is a lot of coin dipping and then slabbing going on.