The Blue sheet is more for slabbed coins.... As a rule to go by... Most of the time a coin slabbed by PCGS will go for more than one in NGC holder...NOW THAT DOESN'T MEAN THEY ARE BETTER...in fact I think NGC graders better than PCGS...but that is just my 2cents....on some coins NGC is tighter than PCGS and on some PCGS is tighter than NGC. Now over that ANACS will almost always sell at a lower price...I think that they seem to be the best for Jefferson Nickles and Franklin Halves--- So most of the time I think you can use the Gray Sheet for slabbed coins too. (BTW---If you are ever looking at some Franklins with FBL in the grade...if they are slabbed by NGC they will be better than PCGS...its just a way they slab FBL (Full bell lines) NGC is LOTS tigher on them than PCGS.) If you want both sheets....I've seen both and they are nice...most dealers only get Gray though Speedy
Bluesheet is for slabbed coins that are basically the worst of the worst. Stuff you'd buy sight unseen. Greysheet is for properly graded coins.
