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					Originally Posted by  glchen
					 
				 
				I use all three, but more of my cards are in PSA.  As mentioned above, all three are accurate in determining authenticity of cards and alterations ... 
			
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 WHAT??!!  Ask the guy whose Plank was butchered before being slabbed as "Mr. X" by PSA at a grade of 4 if he thinks all three are "accurate ... in determining alterations."  Bet he'd say no.  In fact, I know he would.