To paraphrase a statement made by Jack H. Robinson, in print, in 1991:

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Posted By: Dan Kravitz

I would agree that the cards should be graded on a scale with more tolerance given to a 100 year old card than a 3 year old card. However, there are many examples of high grade vintage cards, so if one card from 1910 was mint and another example was poor, the scale would have to be the same as any other issue no matter when it was produced. If there were no high grade vintage examples they would have to have a sliding scale. On a side note, grading companies missed the boat when determining the scale. It seems to me that not all grades from 1-5 are equal while most 5-10 are. For instance... a card that has multiple creases would be a 1, while a card with some paper loss and a minor crease is a 2. The difference between some 1's is amazing. You can't say the same for a 6. They should have spread the 1-5 grade through 7. SGC should have 1/2 grades. This would solve a lot of confusion.