Rule of Thumb for (OC) and other qualifiers?

[jb67]

Rule of thumb I believe is to drop 2 grades. PSA 7 (oc) would be a PSA 5 etc..

[swarmee]

For the registry sets, it counts 2 grades below your listed grade. So the 6 is a 6 and the 7 would be a 5 if you put them in a graded registry on PSA's website. When people talk about their GPA for the set, that's how it is averaged. Prices seem to drop between 2-3 grades for any qualifier, from what I've seen.
So your 7(OC) may only sell around a 4.5 or so.

Now if the card is modern, OC can really kill the value. Just because there's so many of them made, why grade/buy one that has a major flaw?

[STL1944]

Thank you all for your thoughts! Much appreciated.

[Hammerin'Hank]

My least favorite thing about PSA are the qualifiers. I totally agree with the other poster who referenced the severity of OC cards playing a big part. Some cards are borderline OC and still carry good value with the more severe OC cards being effected more from a value perspective.

I have more PSA cards in my collection than any of the other graders but I prefer SGC b/c they don't mess with qualifiers.

[pclpads]

I'd take the 6 all day long over the 7Q. They are virtually the same card w/ the T-B reversed. Q's bug the hell out of me and I avoid them if at all poss.