What are your thoughts of the PSA/DNA letters that have the grading scale associated to them versus the letters that just state the item is genuine and have no grade? I would think that any valuable item in the 1980's or before it is worth having the letter. I would also think if the item is worth $500 or above it probably is worth having it.

Also, at what point do you frown upon a grade? Is a GU 7 acceptable? How about a GU 8?

Any thoughts are appreciated. I know that some of you might say about doing your own research, but that is not what I am looking for.

Chris