What % of PCGS slabs are over-graded IYO

Cam40

This could be interesting.I think I,ve seen a few but would hate to hazard a guess as I probably haven`t viewed
nearly as many as I know many of you have.

And would you say there are probably more that are under-graded?

Then.What percentage in your opinion are right-on-the-money.

benloe

Might have to break it out between MS and PR. I have seen and handled enough PR70DCAMs that
IMO it is higher than most here would think.

keets

........i'd say that logically they get 3-out-of-4 right with the remainder split over/under favored towards under. not scientific so go easy on me if i missed the mark.

al h.

Merc

Not too many, maybe 1%. I rejected a MS65 FH 1928-S quarter in a PCGS holder recently. It was MS65 but only a 90% full head. Usually I have no problem with the assigned grade.

gmarguli

Probably 2-3% and a fair amount of those is due to changing grading standards.

Cam40

2-3%?Thats well within the exceptable range for `defects` in a what would be considered a very good company.

Sounds good.

Cam40

Not sure if its really true but I had hear that up tp 10% defects, for any given company, is exceptable under law.
True?
But thats maybe just in manufacturing..

coppercoins

Nearly 50% of the Lincolns I have seen slabbed were overgraded, some of them were grossly overgraded - and that's not counting ACG, I don't even consider their slabs for a minute. The one I found that was least likely to overgrade Lincolns was ANACS. PCGS comes in second. The difference is that ANACS will slab trash, PCGS won't.

dorkkarl

10-15% overgraded, 10-15% undergraded. a large majority of the time, i agree.

or should i say, they agree w/ me.

K S

IrishMike

It would be a small percentage. However the interesting thing to me about grading practices is the wide variance in a particular grade level, especially with copper. Copper by admission of the principals of grading companies is hard to grade. For example in 64 Red and 65RB IHC's which is my current focus of collecting (slabbed coins anyway), the eye appeal can be all over the place on different coins. This is what makes grading so difficult for me.

Lakesammman

It depends on the grading "era" your talking about. In the past, I would pass on 90% or more of red IHC's. Currently, they are so tight that there are bargains to be had. For instance, I bought a beautiful 1881 65R that is a lock 66R. It's stuck in a 65R holder currently because of PCGS's current tough standards. I was more than happy to quickly pay 65R money for it. At the FUN show dealers were more hesitant to let those kinds of coins go, wanting to try again at the grading table.

I suspect this current tough grading climate also contributed to the high prices at the auctions - those kinds of grades (66-68R) just aren't being given out currently so it puts more price pressure on those high grade coins that already exist.

KlectorKid

0%-100% Coin grading is an art not a science. People grade differantly people paint differantly. It is a matter of opinion there are people who say ACG doesnt over grade r they right no are they wrong no, because its their opinion and every1 is entiteled to one. Thats why their are coin grading services so there is only a few opinions, instead of raw where people could say a AG-3 coin is ms-67 because thats their opinion.

nwcs

Impossible to determine as we have all seen a highly skewed population of slabs. And then we also have to deal with our standards vs. PCGS's. The question is how consistently has PCGS graded according to their standards. We may think that particular Morgan dollar is overgraded, but it could be perfectly consistent with their standard which makes it correctly graded.

If it was possible (and it isn't), the best approach is to get a random selection of PCGS slabs and check them against their published standards and see how they compare. Then we can make an inference about their consistency to their standard. And their standards, while based in ANA standards, are not ANA standards. So it can be perfectly normal and valid to have a coin grade by ANA standards as 64, by NGC standards be 65 and by PCGS standards to be 63 and have all three be correct.

Neil

Singapore

I think they do a much better job with some series and some grades than others.

For example, probably mint state Morgans are 95 - 98% 'correct' (recognizing this is an art and not a science) - meaning the grade seems about right. Probably they are just as good at most 20th century stuff in mint state.

Get into circulated grades in these same series and I'd say they are at 90%. Get into the older stuff and I'd say they are more like 75%.

Move into colonials and I'd say 30% are graded correctly, maybe less.

jdimmick

All use my own personal collection as a guide. My collection is 100% PCGS graded.

Coins are all key-dates
Metal represented is copper, nickel, silver (no gold)
Grade range's from VG-10 thru Ms-64
Denomination is .01 thru $1

IMO
7% are overgraded
15% are undergraded

The rest right on,
although several would grade higher in other services holder's like (ICG, NGC)

Tundertron

In my opinion PCGS is the most accurate in grading seated dollars. I have seen (I believe it was an 1847) in an AU 53 holder that was at best an EF 45. However, on the average they are 90 to 95 percent correct, 5 to 10 percent undergraded and less than 2 percent overgraded on all the seated dollars that I have examined.

braddick

Even peanut butter is allowed X amount of rat hairs and tiny bugs per part/ per million, so I suppose PCGS gets it wrong. I suspect Greg's answer is about the closest.
Not too bad.

What I wish is the Services would set THEIR Standard and STICK with it.

WANNABEDEALER

Lately almost nothing is overgraded, and a good 50% of the high end stuff is undergraded. However there are some exceptions, the 1963 Lincoln Cent in PR70DCAM was neither a 70 (carbon spots) or DCAM.