1957 Topps - What would be considered a "low pop?"

[Archive]

Posted By: jackgoodman

So, as an example, I've looked at the 1957 Topps Baseball set on the PSA Pop Report.

I'm trying to determine what cards would be considered "low pop." I know PSA 9 & 10 would qualify easily, but let's look at the PSA 8 (no qualifier) category.

There are 37811 cards graded PSA 8. If I divide the number of different cards in the set (let's say 415 for ease), that would give an average of 91 of each card graded as such.

Would it be appropriate then to consider any card with less than 91 examples as a "low pop" card? Or is there another method to use.

Your input will be appreciated. Thanks.